题目内容
直接写出计算结果:
7
-4.37-2
+33.2=
0.75÷0.15-0.375×
=
7
×3.8+0.62×72=
0.25×1.25÷
=
7
1 |
4 |
1 |
5 |
0.75÷0.15-0.375×
4 |
5 |
7
1 |
5 |
0.25×1.25÷
1 |
64 |
分析:①②把分数化成小数,再小数加减法的计算法则进行计算即可.③运用乘法的分配律进行计算即可.④把除以
变成乘以64再运用小数的乘法进行计算即可.
1 |
64 |
解答:解:①7
-4.37-2
+33.2=33.88;
②0.75÷0.15-0.375×
=4.7;
③7
×3.8+0.62×72=72;
④0.25×1.25÷
=20;
故答案为:33.88,4.7,72,20.
1 |
4 |
1 |
5 |
②0.75÷0.15-0.375×
4 |
5 |
③7
1 |
5 |
④0.25×1.25÷
1 |
64 |
故答案为:33.88,4.7,72,20.
点评:考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
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