题目内容
选择合适的方法,计算下面各题.
| 18.7-4.375-6.625 | 920÷40﹢23×50 | ||||||||||
12×(
| 4.4×
|
(1)18.7-4.375-6.625,
=18.7-(4.375+6.625),
=18.7-11,
=7.7;
(2)920÷40﹢23×50,
=23+23×50,
=23+1150,
=1173;
(3)12×(
+
-
),
=12×
+12×
-12×
,
=3+2-4,
=1;
(4)4.4×
+3.6÷1
+0.75×2,
=4.4×
+3.6×
+
×2,
=
×(4.4+3.6+2),
=
×10,
=
.
=18.7-(4.375+6.625),
=18.7-11,
=7.7;
(2)920÷40﹢23×50,
=23+23×50,
=23+1150,
=1173;
(3)12×(
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
=12×
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
=3+2-4,
=1;
(4)4.4×
| 3 |
| 4 |
| 1 |
| 3 |
=4.4×
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
=
| 3 |
| 4 |
=
| 3 |
| 4 |
=
| 15 |
| 2 |
练习册系列答案
相关题目