Worksheet: Adding Three Numbers by Making 10

In this worksheet, we will practice adding three one-digit numbers by first adding two of them to make 10.

Q1:

Answer the questions to find an easy way to add 6+7+3.

What is 7+3?

What is 6+10?

What is 6+7+3?

Q2:

Michael started putting counters into ten frames to help him add.

Can you find the total?

Q3:

We can add three numbers in any order.

Which of these is equal to the sum of 5, 9, and 1?

  • A
  • B
  • C

What is 5+9+1?

Q4:

Fill in the blank: 6++3=6+10.

Q5:

Add the numbers.

Find the ten frames that show the sum.

  • A
  • B
  • C

Q6:

Add by making 10.

Q7:

Hannah started putting counters into ten frames to help her add.

What is the total?

Q8:

Add the numbers.

Hint: Can you find a way to make 10?

Q9:

Adding 3 numbers is easy when we can make 10!

To find 8+7+2 we can make 10 by adding 8 and 2 first.

What number is missing ?

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