Multiplying Multiples of 10

Matt with Mr. J introduces a mental math strategy for multiplying multiples of 10. He demonstrates this technique with examples: 90 times 7, 600 times 40, and 200 times 24. The strategy involves multiplying the non-zero digits and then appending the appropriate number of zeros. Viewers are encouraged to practice with additional problems and share their answers.

What is the first step in the mental math strategy for multiplying multiples of 10?

• Multiply the non-zero numbers first.

• Subtract the zeros.

• Add all the zeros first.

• Divide the numbers by 10.

Tags

CCSS.4.NBT.B.5

When multiplying 90 by 7, what is the result before adding the zero?

• 630

• 63

• 90

• 70

Tags

CCSS.5.NBT.A.2

How many zeros are added to the result of 6 times 4 when calculating 600 times 40?

• Four

• One

• Two

• Three

Tags

CCSS.5.NBT.B.5

What is the final answer when multiplying 200 by 24?

• 480

• 4800

• 48000

• 2400

Tags

CCSS.4.NBT.B.5

What should you do after multiplying the non-zero numbers in a multiplication problem involving multiples of 10?

• Multiply the zeros separately.

• Ignore the zeros.

• Subtract the zeros from the result.

• Add the zeros to the end of the result.

Tags

CCSS.4.NBT.B.5