| 1004-298= | 6.4-3.17= | × = | + = |
| 4.2×0.5= | 1÷ = | 9.3÷0.03= | 2- = |
| 解:1004-298=706, | 6.4-3.17=3.23, | × = , | + = , |
| 4.2×0.5=2.1, | 1÷ = , | 9.3÷0.03=310, | 2- =1 . |
分析:根据整数、分数和小数加减乘除的计算方法进行计算即可.
点评:口算时,注意运算符号和数据,然后再进一步计算即可.
编辑:chaxungu时间:2026-04-26 09:37:30分类:小学数学题库
| 1004-298= | 6.4-3.17= | × = | + = |
| 4.2×0.5= | 1÷ = | 9.3÷0.03= | 2- = |
| 解:1004-298=706, | 6.4-3.17=3.23, | × = , | + = , |
| 4.2×0.5=2.1, | 1÷ = , | 9.3÷0.03=310, | 2- =1 . |