Doubles Plus 1 Strategy
Practice the doubles plus 1 addition strategy with this third-grade math worksheet, featuring various question types.
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Doubles Plus 1 Addition Strategy
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Read each question carefully and use the 'doubles plus 1' strategy to find the answer. Remember, doubles plus 1 means you solve the 'doubles' fact first, then add one more.
1. 3 + 4 = 3 + 3 + 1 =
2. 5 + 6 = 5 + 5 + 1 =
3. 7 + 8 = 7 + 7 + 1 =
4. 9 + 10 = 9 + 9 + 1 =
5. Which number sentence shows the doubles plus 1 strategy for 6 + 7?
6 + 6 + 1
7 + 7 - 1
6 + 7 + 1
6 + 6 - 1
6. Use the doubles plus 1 strategy to solve 8 + 9. Show your work.
7. The expression 4 + 5 can be solved using the doubles plus 1 strategy as 4 + 4 + 1.
True
False
8. Use the number line to show how to solve 2 + 3 using the doubles plus 1 strategy. First, circle the 'doubles' sum, then show adding one more.
Use the words below to complete the sentences.
9. To use the doubles plus 1 strategy, first you the smaller number.
10. After doubling, you one more to get the final .