20 加法 79 等于多少？
20 + 79 = 99
20加法79 等于 99
竖式演算
验算
- 用减法验算：99 − 79 = 20
- 用减法验算：99 − 20 = 79
相关题目
20 + 78 = 98
20 + 80 = 100
20 + 77 = 97
20 + 81 = 101
20 + 76 = 96
20 + 82 = 102
20 + 83 = 103
20 + 75 = 95
19 + 79 = 98
21 + 79 = 100
22 + 79 = 101
18 + 79 = 97
23 + 79 = 102
17 + 79 = 96
24 + 79 = 103
16 + 79 = 95
1 + 98 = 99
2 + 97 = 99
3 + 96 = 99
4 + 95 = 99
5 + 94 = 99
6 + 93 = 99
33 + 65 = 98
6 + 92 = 98
37 + 1 = 38
2 + 20 = 22
5 + 20 = 25
20 + 63 = 83
3 × 33 = 99
9 × 11 = 99