×45= | + = | 6.3÷0.01= | 2.5+1.25= | 6- - = |
÷ = | 390×0.02= | 510-240= | 0.13= | 10× ÷10× = |
解: ×45=35, | + = , | 6.3÷0.01=630, | 2.5+1.25=3.75, | 6- - =5, |
÷ = , | 390×0.02=7.8, | 510-240=270, | 0.13=0.001, | 10× ÷10× = . |
分析:根据分数和小数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:2026-04-27 08:21:29分类:小学数学题库
×45= | + = | 6.3÷0.01= | 2.5+1.25= | 6- - = |
÷ = | 390×0.02= | 510-240= | 0.13= | 10× ÷10× = |
解: ×45=35, | + = , | 6.3÷0.01=630, | 2.5+1.25=3.75, | 6- - =5, |
÷ = , | 390×0.02=7.8, | 510-240=270, | 0.13=0.001, | 10× ÷10× = . |