+ = | 7.5-(2.5+3.8)= | + = | 0.36+1.54= | 135÷5= | 2- - = |
+ + = | - = | 1- - = | ( + )-( - )= | - = |
+ =1, | 7.5-(2.5+3.8)=1.2, | + = , | 0.36+1.54=1.9, | 135÷5=27, | 2- - =1, |
+ + =1 , | - = , | 1- - = , | ( + )-( - )=1, | - = . |
分析:根据分数、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 08:37:06分类:小学数学题库
+ = | 7.5-(2.5+3.8)= | + = | 0.36+1.54= | 135÷5= | 2- - = |
+ + = | - = | 1- - = | ( + )-( - )= | - = |
+ =1, | 7.5-(2.5+3.8)=1.2, | + = , | 0.36+1.54=1.9, | 135÷5=27, | 2- - =1, |
+ + =1 , | - = , | 1- - = , | ( + )-( - )=1, | - = . |