1. Math
Desiree Lynn
Computer Applications p.6

2. 3
2 x8x4 4
16
3
64 4
3 3
4 4

3. 7 x8 6 18 x3
56 3 x3
56 9 47

4. 2
15 2 x3 6
2x9
18 6
15 3 12