| 2+8= | 0.8×4= | 0.2+0.8÷2= | 1÷0.125= | 60×5%= |
1- - = | 1- + = | 3.2÷ = | ×6÷ ×6= | ( - )×20= |
| 解:2+8=10, | 0.8×4=3.2, | 0.2+0.8÷2=0.6, | 1÷0.125=8, | 60×5%=3, |
1- - =0, | 1- + = , | 3.2÷ =6.4, | ×6÷ ×6=36, | ( - )×20=3. |
分析:根据整数和分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 09:57:40分类:小学数学题库
| 2+8= | 0.8×4= | 0.2+0.8÷2= | 1÷0.125= | 60×5%= |
1- - = | 1- + = | 3.2÷ = | ×6÷ ×6= | ( - )×20= |
| 解:2+8=10, | 0.8×4=3.2, | 0.2+0.8÷2=0.6, | 1÷0.125=8, | 60×5%=3, |
1- - =0, | 1- + = , | 3.2÷ =6.4, | ×6÷ ×6=36, | ( - )×20=3. |