题目内容
脱式计算.
| 6.25-40÷16×2.5 |
| [
| [0.8×(
|
(1)6.25-40÷16×2.5,
=6.25-2.5×2.5,
=6.25-6.25,
=0;
(2)
+(4
-3
)÷
,
=
+
÷
,
=
+2,
=2
;
(3)[
-(
-
)]÷4,
=[
+
-
]÷4,
=(1-
)÷4,
=
÷4,
=
;
(4)[0.8×(
+
×
)]÷30%,
=[0.8×(
+
×
)]÷30%,
=[0.8×(
+
)]÷30%,
=[0.8×3]÷30%,
=2.4÷0.3,
=8.
=6.25-2.5×2.5,
=6.25-6.25,
=0;
(2)
| 1 |
| 12 |
| 5 |
| 12 |
| 1 |
| 2 |
| 11 |
| 24 |
=
| 1 |
| 12 |
| 11 |
| 12 |
| 11 |
| 24 |
=
| 1 |
| 12 |
=2
| 1 |
| 12 |
(3)[
| 3 |
| 5 |
| 3 |
| 4 |
| 2 |
| 5 |
=[
| 3 |
| 5 |
| 2 |
| 5 |
| 3 |
| 4 |
=(1-
| 3 |
| 4 |
=
| 1 |
| 4 |
=
| 1 |
| 16 |
(4)[0.8×(
| 3 |
| 5 |
| 27 |
| 10 |
| 8 |
| 9 |
=[0.8×(
| 3 |
| 5 |
| 27 |
| 10 |
| 8 |
| 9 |
=[0.8×(
| 3 |
| 5 |
| 12 |
| 5 |
=[0.8×3]÷30%,
=2.4÷0.3,
=8.
练习册系列答案
相关题目