| 1.9+3.01= | 0.23×400= | ÷ = | 5× ÷ ×5= |
( + )×15= | × × = | - = | 10- -0.875= |
| 1.9+3.01=4.91, | 0.23×400=92, | ÷ = , | 5× ÷ ×5=25, |
( + )×15=11, | × × = , | - = , | 10- -0.875=9. |
分析:根据小数、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.
编辑:chaxungu时间:2026-04-27 11:21:27分类:小学数学题库
| 1.9+3.01= | 0.23×400= | ÷ = | 5× ÷ ×5= |
( + )×15= | × × = | - = | 10- -0.875= |
| 1.9+3.01=4.91, | 0.23×400=92, | ÷ = , | 5× ÷ ×5=25, |
( + )×15=11, | × × = , | - = , | 10- -0.875=9. |