+ = | - = | 4÷10%= | 7×30%= | 3.14×4= |
÷ = | 12÷ = | 3.14×12= | 0.75- = | × = |
+ = , | - = , | 4÷10%=40, | 7×30%=2.1, | 3.14×4=12.56, |
÷ = , | 12÷ =15, | 3.14×12=3.14, | 0.75- =0, | × = . |
分析:根据分数、小数和百分数加减乘除的计算方法进行计算.
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 11:53:23分类:小学数学题库
+ = | - = | 4÷10%= | 7×30%= | 3.14×4= |
÷ = | 12÷ = | 3.14×12= | 0.75- = | × = |
+ = , | - = , | 4÷10%=40, | 7×30%=2.1, | 3.14×4=12.56, |
÷ = , | 12÷ =15, | 3.14×12=3.14, | 0.75- =0, | × = . |