20 加法 100 等于多少？
20 + 100 = 120
20加法100 等于 120
竖式演算
验算
- 用减法验算：120 − 100 = 20
- 用减法验算：120 − 20 = 100
相关题目
20 + 99 = 119
20 + 98 = 118
20 + 97 = 117
20 + 96 = 116
20 + 95 = 115
20 + 94 = 114
20 + 93 = 113
20 + 92 = 112
19 + 100 = 119
21 + 100 = 121
22 + 100 = 122
18 + 100 = 118
23 + 100 = 123
17 + 100 = 117
24 + 100 = 124
16 + 100 = 116
21 + 99 = 120
22 + 98 = 120
23 + 97 = 120
24 + 96 = 120
25 + 95 = 120
26 + 94 = 120
10 + 16 = 26
40 + 26 = 66
52 + 36 = 88
82 + 14 = 96
21 + 34 = 55
80 + 9 = 89
12 × 10 = 120
24 × 5 = 120