4
Whole Number Operations I
Addition 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
6
11
8
9
9
15
8
14¢
6¢
7¢
9¢
13
4
0
7
16
7
7
6
12¢
4¢
14¢
7¢
6
5
16
9
4
9
8
8
or 5 4 9
addends sum
or 11 5 6
difference
5
4
9
addends
sum
11
5
6 difference
Remember:
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