Page 135 - บทที่ 1
P. 135
n
3 X 5 = 3 + 6 — 7 - 1
16 - 9 = 7 — 5 — 9 + 8
6 + 7 = 5 X 9 — 5 + 0
9 X 1 = 13 — 5 — 7x9
8 - 5 = 6 + 8 5 + 8
4 + 4 = 8 X 3 — 3x7
3 9 — 3 13-8
10 -4 = 7 X 4 9-6
5 + 6 = 1 + 7 — 2x7
3 X 4 = 9 + 2 — 2 + 8
II
1 + 5 = 1 X 1 — 1 - 1
CD
X
9 + 4 = 11 — 3 — 2 + 4
4 - 2 = 9 X 7 — 11-4
7 X 8 = 17 — 9 — 13-6
11 - 9 = 7 + 5 — 9 + 1
17 - 8 = 9 X 4 6x8
14 - 9 = 2 X 2
•uivi
132