试题详情
直接写得数。
14 - 7 = | 15 - 9 = | 16 - 8 = | 31 - 5 = |
20 + 40 = | 85 - 5 = | 44 + 7 = | 93-90= |
15-7+3= | 8+(90-50)= | 47+30+20= |
知识点
参考答案
采纳过本试题的试卷
14 - 7 = | 15 - 9 = | 16 - 8 = | 31 - 5 = |
20 + 40 = | 85 - 5 = | 44 + 7 = | 93-90= |
15-7+3= | 8+(90-50)= | 47+30+20= |