4
Whole Number Operations IAddition and Subtraction Facts
Add: 5 4 ?Subtract: 11 5 ?Add or subtract. Watch the signs.
- 17 8 20. 6 6 21. 15 7 22. 6¢7¢ 23. 3¢8¢
8¢
6¢18¢
9¢9
611
89
915
814¢
6¢7¢
9¢13
40
716
77
612¢
4¢14¢
7¢6
516
94
98
8or 5 4 9addends sumor 11 5 6difference5
4
9addends
sum11
5
6 differenceRemember:
5 4 9 is a number sentence for addition.
11 5 6 is a number sentence for subtraction.8204-6_1-27 1/10/06 7:47 AM Page 4