题目内容
递等式计算.
(1)149+587+51
(2)85×0.75+15×75%
(3)4×17×125
(4)(
+
)×
(5)(
-
)×45
(6)[1-(
×
)]÷
.
(1)149+587+51
(2)85×0.75+15×75%
(3)4×17×125
(4)(
| 1 |
| 8 |
| 3 |
| 4 |
| 1 |
| 7 |
| 1 |
| 3 |
| 1 |
| 5 |
(6)[1-(
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 3 |
(1)149+587+51,
=149+51+587,
=200+587,
=787;
(2)85×0.75+15×75%,
=85×0.75+15×0.75,
=(85+15)×0.75,
=100×0.75,
=75;
(3)4×17×125,
=4×125×17,
=500×17,
=8500;
(4)(
+
)×
,
=
×
,
=
;
(5)(
-
)×45,
=
×45-
×45,
=15-9,
=6;
(6)[1-(
×
)]÷
=[1-
]×3,
=1×3-
×3,
=3-
,
=2
.
=149+51+587,
=200+587,
=787;
(2)85×0.75+15×75%,
=85×0.75+15×0.75,
=(85+15)×0.75,
=100×0.75,
=75;
(3)4×17×125,
=4×125×17,
=500×17,
=8500;
(4)(
| 1 |
| 8 |
| 3 |
| 4 |
| 1 |
| 7 |
=
| 7 |
| 8 |
| 1 |
| 7 |
=
| 1 |
| 8 |
(5)(
| 1 |
| 3 |
| 1 |
| 5 |
=
| 1 |
| 3 |
| 1 |
| 5 |
=15-9,
=6;
(6)[1-(
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 3 |
=[1-
| 1 |
| 12 |
=1×3-
| 1 |
| 12 |
=3-
| 1 |
| 4 |
=2
| 3 |
| 4 |
练习册系列答案
相关题目