# Multiplication Flashcards

Multiplication Flashcards
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7200
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3500
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2400
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1800
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2000
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360
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450
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160
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300
Got it
If you're multiplying a single digit by a multiple of 10, which digit in the multiple should you forget but then attach to your final answer?
The zero or zeros
Got it
Using only your mental calculator, what is 4 * 500?
2,000
Got it
First, forget the two zeros in 700. Next, multiply 3 * 7 to get 21. Finally, attach the forgotten two zeros to get the final answer: 2,100.
Got it
210
Got it
Multiply 7 * 40 without using a pencil and paper, calculator or other device and explain your steps.
First, forget the zero. Second, multiply 7 * 4 to get 28. Finally, attach the forgotten zero, to get the final answer 280.
Got it
40 is a multiple of what 2-digit number?
The number 40 is a multiple of 10 because it can be evenly divided by 10.
Got it

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30 cards in set

## Flashcard Content Overview

Have you always used paper and pencil or a calculator to multiply? Well, not anymore! This flashcard set will teach you how to multiply single digits and multiples of 10 or higher using mental math. For example, you'll learn that multiples of 10 can be evenly divided by the number 10. How? By simply ignoring the zeros, multiplying the numbers and then attaching the forgotten zeros at the end of the product. After reviewing the flashcards, you will be impressed by how well you can solve multiplication problems using mental math!

Front
Back
40 is a multiple of what 2-digit number?
The number 40 is a multiple of 10 because it can be evenly divided by 10.
Multiply 7 * 40 without using a pencil and paper, calculator or other device and explain your steps.
First, forget the zero. Second, multiply 7 * 4 to get 28. Finally, attach the forgotten zero, to get the final answer 280.
210
First, forget the two zeros in 700. Next, multiply 3 * 7 to get 21. Finally, attach the forgotten two zeros to get the final answer: 2,100.
Using only your mental calculator, what is 4 * 500?
2,000
If you're multiplying a single digit by a multiple of 10, which digit in the multiple should you forget but then attach to your final answer?
The zero or zeros
300
160
450
360
2000
1800
2400
3500
7200
4900
90
160
240
810
250
490
200
600
3000
5600
180
180
1800
2500

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