题目内容
| 用递等式计算,能简算的要简算. 1485+290÷58 | 0.125×32×0.25 | 1080-63.58-36.42 | ||||||||||||
(
| 168.1÷(4.3×2-0.4) | (
|
(1)1485+290÷58,
=1485+5,
=1490;
(2)0.125×32×0.25,
=(0.125×8)×(4×0.25),
=1×1,
=1;
(3)1080-63.58-36.42,
=1080-(63.58+36.42),
=1080-100,
=980;
(4)(
+
)×24,
=
×24+
×24,
=8+6,
=14;
(5)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(6)(
+
)÷(
-
),
=
÷
,
=
×6,
=
,
=5
.
=1485+5,
=1490;
(2)0.125×32×0.25,
=(0.125×8)×(4×0.25),
=1×1,
=1;
(3)1080-63.58-36.42,
=1080-(63.58+36.42),
=1080-100,
=980;
(4)(
| 1 |
| 3 |
| 1 |
| 4 |
=
| 1 |
| 3 |
| 1 |
| 4 |
=8+6,
=14;
(5)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(6)(
| 5 |
| 8 |
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 2 |
=
| 7 |
| 8 |
| 1 |
| 6 |
=
| 7 |
| 8 |
=
| 21 |
| 4 |
=5
| 1 |
| 4 |
练习册系列答案
相关题目