Doubles Plus One Addition
Practice doubles plus one addition facts for primary students.
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Doubles Plus One Addition
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Solve each addition problem using the 'doubles plus one' strategy. Remember, if you know a double, you just add one more!
1. If 2 + 2 = 4, then 2 + 3 =
2. If 3 + 3 = 6, then 3 + 4 =
3. If 4 + 4 = 8, then 4 + 5 =
4. If 5 + 5 = 10, then 5 + 6 =
5. If 6 + 6 = 12, then 6 + 7 =
Use the doubles plus one strategy to solve these problems:
6. 1 + 2 =
7. 4 + 3 =
8. 7 + 8 =
9. 9 + 8 =
10. Which doubles fact helps you solve 6 + 7?
5 + 5
6 + 6
7 + 7
8 + 8
11. The doubles fact for 5 + 6 is 5 + 5.
True
False
12. 8 + 9 is the same as (8 + 8) + 1.
True
False
13. Use the number line to show 3 + 4. Start at 3, jump 3, then jump 1 more.
3 + 4 =
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