题目内容
| 脱式计算,能简算的要简算. (1)(125+8)×8 | (2)25×13×4 | (3)18.8-4.125-5.875 | ||||||||||||||||||||||
(4)
| (5)[1-(
| (6)
|
(1)(125+8)×8,
=125×8+8×8,
=1000+64,
=1064;
(3)18.8-4.125-5.875,
=18.8-(4.125+5.875),
=18.8-10,
=8.8;
(4)
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=
;
(5)[1-(
-
)]×
,
=[1-
]×
,
=
×
,
=
;
(6)
-
×(
÷
),
=
-
×(
×
),
=
-
×
,
=
-
,
=
-
,
=
.
=125×8+8×8,
=1000+64,
=1064;
| (2)25×13×4, =25×4×13, =100×13, =1300; |
=18.8-(4.125+5.875),
=18.8-10,
=8.8;
(4)
| 3 |
| 5 |
| 11 |
| 10 |
| 2 |
| 5 |
| 10 |
| 11 |
=
| 3 |
| 5 |
| 11 |
| 10 |
| 2 |
| 5 |
| 11 |
| 10 |
=(
| 3 |
| 5 |
| 2 |
| 5 |
| 11 |
| 10 |
=
| 11 |
| 10 |
(5)[1-(
| 1 |
| 2 |
| 1 |
| 4 |
| 2 |
| 3 |
=[1-
| 1 |
| 4 |
| 2 |
| 3 |
=
| 3 |
| 4 |
| 2 |
| 3 |
=
| 1 |
| 2 |
(6)
| 5 |
| 8 |
| 1 |
| 4 |
| 8 |
| 9 |
| 4 |
| 3 |
=
| 5 |
| 8 |
| 1 |
| 4 |
| 8 |
| 9 |
| 3 |
| 4 |
=
| 5 |
| 8 |
| 1 |
| 4 |
| 2 |
| 3 |
=
| 5 |
| 8 |
| 1 |
| 6 |
=
| 15 |
| 24 |
| 4 |
| 24 |
=
| 11 |
| 24 |
练习册系列答案
相关题目