题目内容
直接写得数
800×0.125= | 70.8×0.01= | 4-0.35= | 19×0.3+0.3= | 6.07×0.1= |
6÷12= | 0.66÷0.6= | 1.7×8-1.7×8= | 1.3×9+1.3= | 10-1.25×8= |
1.6+9.9+2.4= | 0.9÷1.8= | 5.4÷2×1= | 1.7×0.25×4= |
分析:横向数:(1)(2)(5)(8)(10)依据小数乘法计算方法解答,
(3)依据小数减法计算方法解答,
(4)(9)运用乘法分配律解答,
(6)依据整数除法计算方法解答,
(7)(12)(13)依据小数除法计算方法解答,
(11)运用加法交换律解答,
(14)运用乘法结合律解答.
(3)依据小数减法计算方法解答,
(4)(9)运用乘法分配律解答,
(6)依据整数除法计算方法解答,
(7)(12)(13)依据小数除法计算方法解答,
(11)运用加法交换律解答,
(14)运用乘法结合律解答.
解答:
解:800×0.125=100, | 70.8×0.01=0.708, | 4-0.35=3.65, | 19×0.3+0.3=6, | 6.07×0.1=0.607, |
6÷12=0.5, | 0.66÷0.6=1.1, | 1.7×8-1.7×8=0, | 1.3×9+1.3=13, | 10-1.25×8=0, |
1.6+9.9+2.4=13.9, | 0.9÷1.8=0.5, | 5.4÷2×1=2.7, | 1.7×0.25×4=1.7, |
点评:本题主要考查学生依据四则运算计算方法,以及正确运用简便算法解决问题的能力.
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