91 减法 21 等于多少?
91 - 21 = 70
91减法21 等于 70
竖式演算
验算
- 用加法验算:70 + 21 = 91
相关题目
91 - 20 = 71
91 - 22 = 69
91 - 19 = 72
91 - 23 = 68
91 - 24 = 67
91 - 18 = 73
91 - 25 = 66
91 - 17 = 74
90 - 21 = 69
92 - 21 = 71
89 - 21 = 68
93 - 21 = 72
94 - 21 = 73
88 - 21 = 67
95 - 21 = 74
87 - 21 = 66
71 - 1 = 70
72 - 2 = 70
73 - 3 = 70
74 - 4 = 70
75 - 5 = 70
76 - 6 = 70
75 - 62 = 13
94 - 81 = 13
85 - 45 = 40
40 - 30 = 10
38 - 8 = 30
81 - 11 = 70
14 + 56 = 70
21 + 49 = 70