题目内容
直接写出结果 568-198= | 0.65÷1.3= | 4.5×102= | 5-0.25+0.75= | 3.7×99+3.7= |
0.4÷40%= | 600÷25÷8= | 1.2= | = | 5-5÷6= |
30%+6.5= | 5÷21×7= | = | = | = |
= |
解:568-198=370; | 0.65÷1.3=0.5; | 4.5×102=459; | 5-0.25+0.75=5.5; | 3.7×99+3.7=370; |
0.4÷40%=1; | 600÷25÷8=6; | 1.2=2; | =; | 5-5÷6=; |
30%+6.5=6.8; | 5÷21×7=; | =0.75; | =1.5; | =; |
=. |
分析:(1)依据减法性质解答,
(3)(5)(16)运用乘法分配律解答,
(7)依据除法性质解答,
(13)运用加法交换律解答,
其它依据四则运算计算方法解答..
点评:本题主要考查学生运用四则运算计算方法,以及运用简便算法解决问题的能力.
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