| 3.14×4= | ×16= | 1÷ = | ÷ = | 0÷( + )= |
| 3.14×25= | ×6= | ÷ = | × = | ( + )×8= |
3.14×4=12.56, | ×16=10, | 1÷ = , | ÷ =2, | 0÷( + )=0, |
| 3.14×25=78.5, | ×6=3, | ÷ = , | × = , | ( + )×8=10. |
分析:根据小数和分数加减乘除的计算方法进行计算即可;(
+
)×8根据乘法分配律进行简算.点评:口算时,注意运算符号和数据,然后再进行计算即可;能简算的要简算.
编辑:chaxungu时间:2026-04-26 09:43:27分类:小学数学题库
| 3.14×4= | ×16= | 1÷ = | ÷ = | 0÷( + )= |
| 3.14×25= | ×6= | ÷ = | × = | ( + )×8= |
3.14×4=12.56, | ×16=10, | 1÷ = , | ÷ =2, | 0÷( + )=0, |
| 3.14×25=78.5, | ×6=3, | ÷ = , | × = , | ( + )×8=10. |
+
)×8根据乘法分配律进行简算.