90 加法 20 等于多少？
90 + 20 = 110
90加法20 等于 110
竖式演算
验算
- 用减法验算：110 − 20 = 90
- 用减法验算：110 − 90 = 20
相关题目
90 + 19 = 109
90 + 21 = 111
90 + 22 = 112
90 + 18 = 108
90 + 23 = 113
90 + 17 = 107
90 + 24 = 114
90 + 16 = 106
89 + 20 = 109
91 + 20 = 111
92 + 20 = 112
88 + 20 = 108
93 + 20 = 113
87 + 20 = 107
94 + 20 = 114
86 + 20 = 106
10 + 100 = 110
11 + 99 = 110
12 + 98 = 110
13 + 97 = 110
14 + 96 = 110
15 + 95 = 110
15 + 18 = 33
92 + 71 = 163
19 + 58 = 77
51 + 76 = 127
93 + 13 = 106
43 + 91 = 134
10 × 11 = 110
22 × 5 = 110