70 减法 68 等于多少？
70 - 68 = 2
70减法68 等于 2
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验算
- 用加法验算：2 + 68 = 70
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70 - 67 = 3
70 - 69 = 1
70 - 66 = 4
70 - 70 = 0
70 - 65 = 5
70 - 64 = 6
70 - 63 = 7
70 - 62 = 8
69 - 68 = 1
71 - 68 = 3
68 - 68 = 0
72 - 68 = 4
73 - 68 = 5
74 - 68 = 6
75 - 68 = 7
76 - 68 = 8
3 - 1 = 2
4 - 2 = 2
5 - 3 = 2
6 - 4 = 2
7 - 5 = 2
8 - 6 = 2
73 - 15 = 58
53 - 8 = 45
85 - 57 = 28
73 - 66 = 7
95 - 47 = 48
53 - 5 = 48
2 × 1 = 2
1 × 2 = 2