Page 91 - บทที่ 1

5x6 3 + 5 = 3 — 1 —

8 - 1 9 + 8 = 1 X 5 =:

6 + 8 7x4 = 6 + 7 —

11-9 4 - 3 = 4 + 0 —

8x4 8 + 8 = 8 X 9 —

2 + 2 2x9 = 4 + 6 —

9-4 5 + 6 = 15 — 8 —

7 X 1 14 - 8 = 8 — 3 —

13-8 7 + 1 = 1 + 1 —

4x7 11 - 3 = 6 X 8 —

7 + 3 8x8 = 10 — 7 —

6-2 11 - 7 = 3 X 8 —

2 + 4 5x9 = 2 + 8 —

8 + 6 9 + 9 = 6 X 7 —

11-4 4 + 9 = 12 — 5 —

9x9 10 - 2 = 4 X 8 —

CD
LO
II 1 Qunvi 4x9 =

Q"U1VI unw
90