题目内容
| 能用简便方法的要用简便方法. ①58-16÷
| ②
| ③62.5÷2.5÷4 | ||||||||
| ④8160÷24-36×2.5 | ⑤36×(
| ⑥3.5÷[1-(0.4+
|
①58-16÷
,
=58-20,
=38;
②
-
×
,
=(1-
)×
,
=
×
,
=
;
③62.5÷2.5÷4,
=62.5÷(2.5×4),
=62.5÷10,
=6.25;
④8160÷24-36×2.5,
=340-90,
=250;
⑤36×(
+
-
),
=36×
+36×
-36×
,
=30+3-12,
=21;
⑥3.5÷[1-(0.4+
)],
=3.5÷[1-0.65],
=3.5÷0.35,
=10.
| 4 |
| 5 |
=58-20,
=38;
②
| 2 |
| 9 |
| 6 |
| 15 |
| 2 |
| 9 |
=(1-
| 6 |
| 15 |
| 2 |
| 9 |
=
| 9 |
| 15 |
| 2 |
| 9 |
=
| 2 |
| 15 |
③62.5÷2.5÷4,
=62.5÷(2.5×4),
=62.5÷10,
=6.25;
④8160÷24-36×2.5,
=340-90,
=250;
⑤36×(
| 5 |
| 6 |
| 1 |
| 12 |
| 1 |
| 3 |
=36×
| 5 |
| 6 |
| 1 |
| 12 |
| 1 |
| 3 |
=30+3-12,
=21;
⑥3.5÷[1-(0.4+
| 1 |
| 4 |
=3.5÷[1-0.65],
=3.5÷0.35,
=10.
练习册系列答案
相关题目