+ = | 1- = | + = | - = |
+ + = | 5÷8= | 9.2×0.25×4= | 0.8×25-10= |
+ = , | 1- = , | + = , | - = , |
+ + =1 , | 5÷8= , | 9.2×0.25×4=9.2, | 0.8×25-10=10. |
分析:根据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:2026-04-27 08:22:21分类:小学数学题库
+ = | 1- = | + = | - = |
+ + = | 5÷8= | 9.2×0.25×4= | 0.8×25-10= |
+ = , | 1- = , | + = , | - = , |
+ + =1 , | 5÷8= , | 9.2×0.25×4=9.2, | 0.8×25-10=10. |