What's your method of calculating fast in your head instead of using a calculator/paper & pen?

What's your method of calculating fast in your head instead of using a calculator/paper & pen?
by

1 Answer

Answer :

Trying to break it down and find a part of the number I can calculate easily, then adding that to the rest of it. (Did that make sense?) Like if I want to multiply 24×8 I’ll do 8×20 + 8×4.
by

Related questions

Is there a special method to calculate fast in your head?

Description : Is there a special method to calculate fast in your head?

Last Answer : I pretend like I’m writing the formula down on a piece of paper in my head.

How do you do a summation notation on a calculator ?

Description : How do you do a summation notation on a calculator ?

Last Answer : http://instructionsmanuals.com/u2/pdf/calculadoras/Casio-FX83ES-en.pdf

Where can I learn all of the special math functions on my Graphics calculator?

Description : Where can I learn all of the special math functions on my Graphics calculator?

Last Answer : Did you actually read the book? Look up what the buttons do.

Can you help me fix my TI-84 calculator?

Description : Can you help me fix my TI-84 calculator?

Last Answer : do you have the Ti-84 Connectivity software installed in your computer?

If I have a 77% as my current grade and get a 54/54 on my Chapter test what is my current percentage in my class?

Description : If I have a 77% as my current grade and get a 54/54 on my Chapter test what is my current percentage in my class?

Last Answer : answer:Not enough information. We don't know how the teacher calculates grades (straight line or a curve?). We also don't know how many other tests and assignments make up the 77%. So it's ... tell how this will affect your grade without knowing more about how they are figured in the first place.

How to calculate a percentage with ambiguous numbers?

Description : How to calculate a percentage with ambiguous numbers?

Last Answer : answer:What do you think constitutes enjoying the class? Just 5s? 4s and 5s? 3s, 4s, and 5s? I would not interpret N/A as enjoying the class, but since they still took the survey they should be ... (just 5s, 4s and 5s, etc) and divide that by the total number of students who took the survey.

Mark I is also known as A) American Sequence Controlled Calculator B) Automatic Sequence Calculating Controller C) American Sequence Controlled Computer D) Automatic Sequence Controlled Calculator

Description : Mark I is also known as A) American Sequence Controlled Calculator B) Automatic Sequence Calculating Controller C) American Sequence Controlled Computer D) Automatic Sequence Controlled Calculator

Last Answer : Answer : D

The earliest calculating device is : a. Calculator b. Abacus c. Difference engine d. Analytical engine

Description : The earliest calculating device is : a. Calculator b. Abacus c. Difference engine d. Analytical engine

Last Answer : b. Abacus

Research Paper: Top 10 Ways to a Make Difference Using a Pen

Description : Research Paper: Top 10 Ways to a Make Difference Using a Pen

Last Answer : Research Paper Writing Tips Benjamin Franklin once said that if you want to be remembered when you are dead, you only have two choices: write things that people will soon read or do things that future ... well-deserved grade of A. These tips can help you change the world in your own little way.

Most important method for calculating discharge for planning a water supply project, is (A) Velocity area method (B) Weir or spillway method (C) Use of venturi-meter (D) Using power plant consumption

Description : Most important method for calculating discharge for planning a water supply project, is  (A) Velocity area method  (B) Weir or spillway method  (C) Use of venturi-meter  (D) Using power plant consumption 

Last Answer : (A) Velocity area method

Why do some authors use Pen name instead of real name?

Description : Why do some authors use Pen name instead of real name?

Last Answer : To hide their identity. I have a couple of friends who write and use pen names. Reasons vary: They work in the public eye and don't want their real life audience to know about what they write. They don't ... feel it will be better revived. I always thought if I wrote a book I would use a pen name.

Can a pen drive be used instead of memory in this phone ? xiaomi redmi 8a This phone has usb 2.0 . What if i use 32GB pen drive instead of sd card in this phone.

Description : Can a pen drive be used instead of memory in this phone ? xiaomi redmi 8a This phone has usb 2.0 . What if i use 32GB pen drive instead of sd card in this phone.

Last Answer : It would be better to use OTG pen drive in this phone. Use a little better quality or the phone will be slow.

Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in the tubes of natural circulation evaporators is in the range of 0.3 to 0.9 metre/second (C) Duhring's plot is used for calculating the concentration of solution (D) In a multiple effect evaporation system, the number of effects is limited by the total boiling point rise

Description : Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in ... a multiple effect evaporation system, the number of effects is limited by the total boiling point rise

Last Answer : (C) Duhring's plot is used for calculating the concentration of solution

Am I alone in writing with pen and paper?

Description : Am I alone in writing with pen and paper?

Last Answer : This may not answer your question, but I draw comics and I still use papers. Same goes with my other, recent, more serious artworks. But I go through 3 steps: pencil draft, inking, digital editing ... computer I can see errors and rooms for improvement. Maybe you can do the same with your stories.

What red pen should I use to write on black paper?

Description : What red pen should I use to write on black paper?

Last Answer : You might consider a ultra fine point Sharpie in red.

As the digital age increases is old school paint to canvas or pen to paper artists going the way of the T-Rex?

Description : As the digital age increases is old school paint to canvas or pen to paper artists going the way of the T-Rex?

Last Answer : That’s a different kind of talent than painting. I’m sure there are people who will still appreciate traditional painting throughout the years.

Can you help me find an App that can help one make App's? (any platform, including pen and paper, details inside)

Description : Can you help me find an App that can help one make App's? (any platform, including pen and paper, details inside)

Last Answer : answer:I'm not sure if it's quite what you're looking for, but my buddy makes AppCooker. You can use it with AppTaster to create mockups and make them play. I can't speak to their efficacy personally because ... charge $75-125/hour. If that's the route you end up wanting to take, feel free to PM me.

Pen and Paper RPG geeks. If money and skill were no object, what would be your ultimate game room?

Description : Pen and Paper RPG geeks. If money and skill were no object, what would be your ultimate game room?

Last Answer : I don't think I'd want to include any fancy stuff like that. Just a table with eight or so seats, a grid mat, and adequate lighting. The only other stuff in the room would be a refrigerator, ... and a bin full of dice and figurines. I feel too much else would be a distraction from the storytelling.

Why will pen and paper never die out?

Description : Why will pen and paper never die out?

Last Answer : For the same reason that masturbating will never die out. When there is no better substitute (i.e., women, internet) it will always be a convenient backup.

I am as loud as a plane, as precise as a pen, I never run out, even when I'm on end, I can be refilled. But when I stop working, I just need to recharge. I can help you with ink and paper, just tell me when! What Am I? -Riddles

Description : I am as loud as a plane, as precise as a pen, I never run out, even when I'm on end, I can be refilled. But when I stop working, I just need to recharge. I can help you with ink and paper, just tell me when! What Am I? -Riddles

Last Answer : A Printer!

What did the pen say to the paper? -Riddles

Description : What did the pen say to the paper? -Riddles

Last Answer : Lets run away and WRITE

How a Simple Notebook Can Make Your Pen and Paper Diet a Success?

Description : How a Simple Notebook Can Make Your Pen and Paper Diet a Success?

Last Answer : The pen and paper diet earned its name by the fact that it requires that you keep your diet details written in detail. To make this diet easy and manageable, invest in a large notebook and pen ... diet. A calculator is also recommended for the pen and paper diet to keep things precise and accurate.

As 'Needle' is related to 'Thread' in the same way 'Pen' is related to what? (A) Word(B) To write(C) Cap(D) Ink(E) Paper

Description : As 'Needle' is related to 'Thread' in the same way 'Pen' is related to what? (A) Word(B) To write(C) Cap(D) Ink(E) Paper

Last Answer : (D) Ink

A (n) _______records the movements of the user's pen over a piece of paper: a) digital notepad b) graphics tablet c) touch screen d) None of The Above

Description : A (n) _______records the movements of the user's pen over a piece of paper: a) digital notepad b) graphics tablet c) touch screen d) None of The Above

Last Answer : a) digital notepad

If you are asked to draw the following four figures with the following constraints: They must be drawn in a single stroke (without lifting the pen from paper), and each line is drawn only once. Which of the options can be drawn?

Description : If you are asked to draw the following four figures with the following constraints: They must be drawn in a single stroke (without lifting the pen from paper), and each line is drawn only once. Which of the options can be drawn?

Last Answer : C D

What is GDP? Explain with example the method of calculating Gross Domestic Product. -SST 10th

Description : What is GDP? Explain with example the method of calculating Gross Domestic Product. -SST 10th

Last Answer : G.D.P. is the sum of the money value of final goods and services produced in each sector during a particular year within domestic territory of a country. Only final goods and services are counted ... not correct because then we would be counting the value of the same things a number of times.

Which of the following statements about continuous cardiac output monitoring are true? A. Continuous cardiac output monitoring may unmask events not detected by intermittent cardiac output measurements. B. Continuous cardiac output monitoring by the thermodilution method requires continuous infusion of fluid injectate at a constant rate and temperature. C. The major advantage of the Fick method over the thermodilution method of calculating cardiac output is that it is noninvasive, requiring only the determination of oxygen consumption by respiratory gas analysis. D. The technique of thoracic electrical bioimpedance utilizes sensors to determine stroke volume by detecting changes in resistance to a small, applied alternating current.

Description : Which of the following statements about continuous cardiac output monitoring are true? A. Continuous cardiac output monitoring may unmask events not detected by intermittent cardiac output measurements. ... stroke volume by detecting changes in resistance to a small, applied alternating current.

Last Answer : Answer: AD DISCUSSION: Various techniques are available to measure cardiac output continuously. The advantages of continuous cardiac output monitoring, as compared with intermittent methods, are (1) ... function of the stroke volume, which then can be used to calculate the cardiac output

The method of calculating the national income by the product method is otherwise known as : (1) Income method (2) Value added method (3) Expenditure method (4) Net output method

Description : The method of calculating the national income by the product method is otherwise known as : (1) Income method (2) Value added method (3) Expenditure method (4) Net output method

Last Answer : (4) Net output method Explanation: Primarily there are three methods of measuring national income. Which method is to be employed depends on the availability of data and purpose. The methods ... account. In this method, National Output = National Expenditure (Aggregate Demand) = National Income.

If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed. (A) R/10 (B) R/15 (C) R/20 (D) R/25

Description : If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of  chords produced, should not exceed.  (A) R/10  (B) R/15  (C) R/20  (D) R/25 

Last Answer : (C) R/20 

While calculating the average depth of annual precipitation in a catchment basin, importance to individual rain-gauge station is given in (A) Arithmetical method (B) Thiessen's mean method (C) Isohyetal method (D) Both (b) and (c)

Description : While calculating the average depth of annual precipitation in a catchment basin, importance to individual rain-gauge station is given in (A) Arithmetical method (B) Thiessen's mean method (C) Isohyetal method (D) Both (b) and (c)

Last Answer : Answer: Option D

Give equation for calculating depreciation under reducing balance method.

Description : Give equation for calculating depreciation under reducing balance method.

Last Answer : Dep per annum= (NBV- Salvage)*rate;

Give equation for calculating depreciation under straight-line method.

Description : Give equation for calculating depreciation under straight-line method.

Last Answer : Dep per annum= cost-salvage/useful life;

The assets which is not taken under the net assets method of calculating Purchase Consideration is: (A) Loose Tools (B) Bills Receivable (C) Machinery (D) Share issued expenses

Description : The assets which is not taken under the net assets method of calculating Purchase Consideration is: (A) Loose Tools (B) Bills Receivable (C) Machinery (D) Share issued expenses

Last Answer : (D) Share issued expenses

The method of calculating the national income by the product method is otherwise known as : (1) Income method (2) Value added method (3) Expenditure method (4) Net output method

Description : The method of calculating the national income by the product method is otherwise known as : (1) Income method (2) Value added method (3) Expenditure method (4) Net output method

Last Answer : Net output method

While calculating performance of medium transmission line, what assumptions are made in case of (i) Nominal 'T' Method (ii) Nominal 'TT' Method.

Description : While calculating performance of medium transmission line, what assumptions are made in case of (i) Nominal 'T' Method (ii) Nominal 'TT' Method. 

Last Answer : (i) Assumptions are made in case of Nominal 'T' Method:  a. It is assume that line capacitance is connected at center of transmission line. b. It is assume that half ... assumed that transmission line resistance & reactance per phase is connected in between two half transmission line capacitance 

While calculating bending stress in the following welded joints which of the welds moment of inertia can be neglected? a) 1 b) None of the listed c) Both 1 & 3 d) Both 2 & 4

Description : While calculating bending stress in the following welded joints which of the welds moment of inertia can be neglected? a) 1 b) None of the listed c) Both 1 & 3 d) Both 2 & 4

Last Answer : b) None of the listed

What is the best ink-refilling method for the Parker Duofold fountain pen?

Description : What is the best ink-refilling method for the Parker Duofold fountain pen?

Last Answer : My dad used fountain pens for 40 years, He used both bottles and cartridges. The cartridges are less messy and refills fit better in your pocket than the bottles.

Alex has been asked to calculate the sales potential for a new line of electronic games his company has acquired. He has developed a general economic forecast for the next two years, used this to estimate market potential and is now calculating sales potential. The approach he is using appears to be: A)build up B)delphi C)break down D)regression

Description : Alex has been asked to calculate the sales potential for a new line of electronic games his company has acquired. He has developed a general economic forecast for the next two years, used this to estimate ... The approach he is using appears to be: A)build up B)delphi C)break down D)regression

Last Answer : C)break down

_______ is a method of storing data bits using magnetic charges instead of the electrical charges used by DRAM. A. VRAM B. WRAM C. MRAM D. None of the above

Description : _______ is a method of storing data bits using magnetic charges instead of the electrical charges used by DRAM. A. VRAM B. WRAM C. MRAM D. None of the above

Last Answer : C. MRAM Magneto resistive RAM

Instead of top speed can police ticket for fast acceleration?

Description : Instead of top speed can police ticket for fast acceleration?

Last Answer : answer:Technically, probably not. Realistically? Yes, they could cite you for unsafe driving. For example in the US the yellow speed signs (like on highway ramps) are suggested speeds, not lawfully mandated speeds. ... get a ticket for going 60 in a 45, but you can get a ticket for unsafe driving.

Why aren't there machines instead of workers at fast food places?

Description : Why aren't there machines instead of workers at fast food places?

Last Answer : A machine could make a meal easily. It could? I find that hard to believe.

Which one of the following is the advantage of connecting two dry cells in parallel instead of in series? Is it because the parallel arrangement: w) gives twice the EMF of one dry cell x) has no internal resistance y) generates heat in an external circuit half as fast as would a single cell z) has half the internal resistance of a single cell

Description : Which one of the following is the advantage of connecting two dry cells in parallel instead of in series? Is it because the parallel arrangement: w) gives twice the EMF of one dry cell x) has no ... circuit half as fast as would a single cell z) has half the internal resistance of a single cell

Last Answer : ANSWER: Z -- HAS HALF THE INTERNAL RESISTANCE OF A SINGLE CELL 

What do you think of the idea of putting your used toilet paper in the trash can instead of flushing it down the toilet?

Description : What do you think of the idea of putting your used toilet paper in the trash can instead of flushing it down the toilet?

Last Answer : Is what we do in Greece; putting it in a dedicated waste bucket (with a lid). The sewer system is not up to par (especially (or exclusively; I’m not sure) on the islands. You get used to it. When I’m back in the Netherlands again, I always am reaching for the bucket, the first couple of days.

Why is it easier to pierce paper with a sharp alpin instead of a blunt alpin ?

Description : Why is it easier to pierce paper with a sharp alpin instead of a blunt alpin ?

Last Answer : The area of the tip of the sharp alpine is smaller than that of the blunt alpine. Therefore, according to the P = F / A formula of pressure, more pressure can be applied to the paper with a ... amount of ball. So it is easier to perforate the paper with a sharp alpin instead of a blunt alpin.

Should a casual baker invest in silicone baking cups, or use paper baking cups instead?

Description : Should a casual baker invest in silicone baking cups, or use paper baking cups instead?

Last Answer : Whether you use silicone or paper baking cups is a matter of preference. Silicone baking cups are easy to clean and have the added advantage of preventing your muffins from burning. Paper cups are easy to clean up and disposable but you may still have to clean the muffin tin after you use them.

What software best works with Wacom Bamboo Pen & Touch?

Description : What software best works with Wacom Bamboo Pen & Touch?

Last Answer : As a program that supports pdf files I can only think of Photoshop. For basic drawing, Wacom has a free paint program called “Sumo Paint”. I also liked Project Dogwaffle. You can also try Manga Studio 4.

My last five letters refer to a raised line on the surface of something; my whole refer to a thin tube containing ink inside a pen. My first three & four letters both refer to vehicles. I am a word of nine letters. What Word am I? -Riddles

Description : My last five letters refer to a raised line on the surface of something; my whole refer to a thin tube containing ink inside a pen. My first three & four letters both refer to vehicles. I am a word of nine letters. What Word am I? -Riddles

Last Answer : A Cartridge.

How to connect Samsung Galaxy Tab A & S Pen to TV -Biology

Description : How to connect Samsung Galaxy Tab A & S Pen to TV -Biology

Last Answer : answer:

RMD & Stretch IRA Calculator?

Description : RMD & Stretch IRA Calculator?

Last Answer : RMD & Stretch IRA CalculatorThe IRS requires that you withdraw at least a minimum amount -known as a Required Minimum Distribution - from your retirementaccounts annually; starting the year you turn ... thiscalculator to help determine how you can stretch out your paymentsfor as long as possible.

During a visit to a second-grade classroom, a student teacher observed a child spending the time allotted for a worksheet either looking out the window or doodling on his paper. When the student teacher asked the child if he needed help on the assignment, he said no. When asked why he wasn’t doing it, he pointed to another student and said, “She does all her work fast and when she’s done, she gets more work.” The boy’s reaction suggests which of the following about his classroom? Options:

Description : During a visit to a second-grade classroom, a student teacher observed a child spending the time allotted for a worksheet either looking out the window or doodling on his paper. When the student ... finish work before the whole class is finished must not interrupt the students who are still working

Last Answer : B) A routine for rewarding students who finish work promptly is not in place.