Mastering Multiplication by Multiples of 10

This video tutorial explains how to multiply by multiples of 10 using mental math strategies. It provides six examples, demonstrating how to use known multiplication facts and zeros to solve problems efficiently. The video emphasizes the importance of recognizing patterns and applying mental math techniques to simplify calculations.

What is the main topic of the video?

• Dividing by multiples of 10

• Multiplying by multiples of 10

• Subtracting multiples of 10

• Adding multiples of 10

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CCSS.3.NBT.A.3

What is a multiple of 10?

• Any number that starts with 10

• Any number that can be divided by 10

• Any number that can be multiplied by 10

• Any number that ends in zero

What is the first step in solving 40 times 3 using mental math?

• Divide 40 by 3

• Add 40 and 3

• Subtract 3 from 40

• Multiply 4 and 3

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CCSS.3.NBT.A.3

What do you do after multiplying the non-zero digits in a problem like 40 times 3?

• Subtract the zeros from the product

• Add the zeros to the product

• Ignore the zeros

• Divide the product by 10

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CCSS.4.NBT.B.5

What is the product of 70 times 5?

• 350

• 75

• 700

• 35

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CCSS.4.NBT.B.5

How many zeros are added to the product of 8 times 5 when solving 8 times 500?

• Three

• Four

• Two

• One

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CCSS.5.NBT.A.2

What is the product of 90 times 50?

• 5000

• 4500

• 900

• 450

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CCSS.4.NBT.B.5

What is the product of 40 times 30?

• 400

• 12000

• 1200

• 120

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CCSS.4.NBT.B.5

How many zeros are added to the product of 9 times 7 when solving 900 times 700?

• Four

• Five

• Three

• Two

Tags

CCSS.5.NBT.B.5

What is the final product of 900 times 700?

• 6300

• 6300000

• 63000

• 630000

Tags

CCSS.5.NBT.B.5