Multiplying by Tens Quiz

What is the basic rule when multiplying a number by 10?

• Add a zero to the end of the number

• Subtract 10 from the number

• Multiply the number by 2

• Divide the number by 10

How do you solve 3 times 40 using the method discussed?

• Subtract 3 from 40

• Multiply 3 by 40 directly

• Multiply 3 by 4 and then add a zero

• Add 3 and 40

What is the result of 5 times 30 using the method explained?

• 15

• 300

• 50

• 150

If you have 30 times 4, what should you do first according to the method?

• Subtract 4 from 30

• Add 30 and 4

• Multiply 30 by 4 directly

• Chop 30 into tens and ones

What is the final step in solving 30 times 4 using the discussed method?

• Add a zero to the result of 3 times 4

• Subtract 4 from 30

• Multiply 30 by 4 directly

• Divide the result by 10