# Worksheet: Mental Multiplication

In this worksheet, we will practice using different strategies to mentally multiply by one-digit numbers.

Q1:

Using the distributive property, solve mentally.

Q2:

Evaluate using the commutative and the associative properties.

Q3:

Calculate .

Q4:

Evaluate using the distributive property.

Q5:

Use real number properties to evaluate mentally.

Q6:

Use the properties of real numbers to evaluate mentally.

Q7:

Without using a calculator, find .

Q8:

Daniel knows that you can break apart numbers to make calculations easier.

Finish his calculation to find the answer.

Pick one way to break apart one of the factors to solve .

• A
• B
• C
• D

Which of these is equal to ?

• A
• B
• C
• D

Q9:

We can use the associative property to help us multiply.

Find the missing factor.

Find the missing product.

Q10:

Which of these is equal to ?

Hint: Remember that you can replace one of the factors by an expression it is equal to.

• A
• B
• C
• D

Q11:

David found a way to make 10 so he can multiply more easily. Find the missing numbers using his strategy.

Q12:

Ethan and Scarlett know that they can multiply 3 numbers in any order.

They both find an expression that is equal to . Ethan can’t solve . Use Scarlett’s expression to find the answer to .

If we don’t know , we can write 28 as and then solve by first making 20.

• A
• B
• C
• D

Q13:

Calculate . Q14:

You know that , , and . Use this to find .

Q15:

Daniel wants to know the answer to . His friends tell him other multiples of 8. Explain how he can use his friends’ answers to figure out .

• AHe can subtract 42 from 200 because .
• BHe can add 42 to 200 because .
• CHe can subtract 24 from 200 because .
• DHe can add 24 to 200 because .

What is ?

Q16:

Use Jennifer's fact to find the missing numbers. Q17:

Calculate . 