| 直接写得数: 1.2+8= | 1.1-0.11= | - = | 0÷1= | 12.5×8= |
× = | ( + )×24= | 1÷ × = | ÷ =1 | 032= |
| 1.2+8=9.2, | 1.1-0.11=0.99, | - = , | 0÷1=0, | 12.5×8=100, |
× = , | ( + )×24=52, | 1÷ × = , | ÷ =1, | 0.32=0.09. |
分析:根据小数加减乘除的计算方法进行计算;
(
+
)×24根据乘法分配律进行计算.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 08:58:30分类:小学数学题库
| 直接写得数: 1.2+8= | 1.1-0.11= | - = | 0÷1= | 12.5×8= |
× = | ( + )×24= | 1÷ × = | ÷ =1 | 032= |
| 1.2+8=9.2, | 1.1-0.11=0.99, | - = , | 0÷1=0, | 12.5×8=100, |
× = , | ( + )×24=52, | 1÷ × = , | ÷ =1, | 0.32=0.09. |
+
)×24根据乘法分配律进行计算.