Practice using doubles facts and near doubles facts to solve addition problems quickly and accurately.
Read each problem carefully. Use doubles facts to help you solve near doubles. Show your work in the space provided.
Use facts you know to add numbers that are close
Math - Grade 2-3
- 1
Solve the doubles fact: 4 + 4 = ____.
- 2
Use the double 5 + 5 to solve 5 + 6. What is the sum?
- 3
Solve: 7 + 7 = ____.
- 4
Use a near double to solve 7 + 8. Explain your thinking.
- 5
Which doubles fact can help you solve 6 + 7? Write the doubles fact and the answer to 6 + 7.
- 6
Solve: 9 + 9 = ____.
- 7
Maya has 8 stickers. Her friend has 9 stickers. Use a near double to find how many stickers they have in all.
- 8
Circle the near double addition fact: 3 + 3, 4 + 5, or 6 + 2. Then solve it.
- 9
There are 5 red apples and 5 green apples in a basket. How many apples are there in all?
- 10
Use 10 + 10 to solve 10 + 11. What is the sum?
- 11
Solve: 2 + 3 = ____. Tell which doubles fact helped you.
- 12
A number line shows a jump of 6 and another jump of 7. What addition sentence does it show, and what is the sum?
- 13
Fill in the blanks: 8 + 8 = ____, so 8 + 9 = ____.
- 14
Which sum is larger, 6 + 6 or 6 + 7? Explain how you know.
- 15
Liam builds 9 blocks in one tower and 10 blocks in another tower. Use a near double to find the total number of blocks.