题目内容
计算
÷12.5%×(
+
) (6.7×60%+3.3×60%)÷
10×(
-
÷37.5%).
1 |
8 |
2 |
3 |
3 |
4 |
1 |
4 |
8 |
5 |
3 |
8 |
分析:完成本题据四则混合运算法则计算即可,算时要注意分析式中数据,能简算的要简算.
解答:解:(1)
÷12.5%×(
+
)
=
÷
×
;
=1×
;
=1
;
(2)(6.7×60%+3.3×60%)÷
=(6.7+3.3)×0.6×4;
=10×0.6×4;
=24;
(3)10×(
-
÷37.5%)
=10×(
-
÷
);
=10×(
-1);
=10×
;
=6.
1 |
8 |
2 |
3 |
3 |
4 |
=
1 |
8 |
1 |
8 |
17 |
12 |
=1×
17 |
12 |
=1
5 |
12 |
(2)(6.7×60%+3.3×60%)÷
1 |
4 |
=(6.7+3.3)×0.6×4;
=10×0.6×4;
=24;
(3)10×(
8 |
5 |
3 |
8 |
=10×(
8 |
5 |
3 |
8 |
3 |
8 |
=10×(
8 |
5 |
=10×
3 |
5 |
=6.
点评:完成本题要注意百分数与分数、小数之间的互化.
练习册系列答案
相关题目