1. Learning Addition Facts Part 2 3 + 3 = 6 4 + 8 = 12

2. Objective l To learn the strategies and patterns for adding sums to 20.

3. Addition Facts are easiest to learn when... l You find patterns. l You use rhymes. l You use strategies. l You relate them to what you already know.

4. 1 + 0 = 1 0 + 7 = 7 Ten Pattern Add number in one’s place plus 0, then bring down the one in 10’s place. 10 7 + 7 Answer 17 1

5. Ten Pattern 10 plus a number is that number with a 1 in front. l 10 + 4 = 14 l 7 + 10 = 17 l 10 + 5 = 15 l 8 + 10 = 18 l 10 + 9 = 19 l 6 + 10 = 16

6. What is 10 + 8 =81 +

7. What is 4 + 10 = 4 + 1

8. What is 10 + 1 =1 + 1

9. What is 9 + 10 =1 + 9

10. What is 10 + 2 =1 + 2

11. What is 5 + 10 =1 + 5

12. What is 10 + 7 =1 + 7

13. What is 3 + 10 =13

14. What is 10 + 6 =16

15. Add like a 10 Pretend 9 is a 10. Nine Strategy Pretend 9 is a 10. Add. Subtract 1 from answer 9 6 + 16 Subtract 1 from answer. 10 15

16. Nine Strategy Pretend 9 is a 10. Add. Subtract 1 from answer. l 4 + 9 = 13 l 9 + 9 = 18 l 5 + 9 = 14 l 9 + 7 = 16 l 6 + 9 = 15 l 9 + 5 = 14

17. What is 9 + 7 = 16 Think 10 +7 17

18. What is 4 + 9 =13 Think 10 +4 14

19. What is 9 + 8 = 17 Think 10 +8 18

20. What is 5 + 9 =14 Think 10 +5 15

21. What is 9 + 6 =15 Think 10 +6 16

22. What is 9 + 9 =18

23. +012345678910 00123456789 1123454789 11 223456789101112 3345678910111213 44567891011121314 556789101112131415 6678910111213141516 77891011121314151617 889101112131415161718 9910111213141516171819 10 11121314151617181920 Addition Facts I Learned

24. Credits Illustrations from: l Clipart from ClickArt 125,000 Deluxe Image Pak, T/Maker Co., Broderbund Software, Inc.