题目内容
脱式计算,能简算的要简算
5.125×
+2.875÷4
1.25×32×2.5×75
-
-
48-(32÷
-
).
5.125×
| 1 |
| 4 |
1.25×32×2.5×75
| 9 |
| 10 |
| 5 |
| 8 |
| 1 |
| 8 |
48-(32÷
| 8 |
| 3 |
| 12 |
| 5 |
(1)5.125×
+2.875÷4
=(5.125+2.875)×
=8×
=2;
(2)1.25×32×2.5×75
=(1.25×8)×(4×2.5)×75
=10×10×75
=7500;
(3)
-
-
=
-(
+
)
=
-
=
;
(4)48-(32÷
-
)
=48-(12-
)
=48-9.6
=38.4.
| 1 |
| 4 |
=(5.125+2.875)×
| 1 |
| 4 |
=8×
| 1 |
| 4 |
=2;
(2)1.25×32×2.5×75
=(1.25×8)×(4×2.5)×75
=10×10×75
=7500;
(3)
| 9 |
| 10 |
| 5 |
| 8 |
| 1 |
| 8 |
=
| 9 |
| 10 |
| 5 |
| 8 |
| 1 |
| 8 |
=
| 9 |
| 10 |
| 3 |
| 4 |
=
| 3 |
| 20 |
(4)48-(32÷
| 8 |
| 3 |
| 12 |
| 5 |
=48-(12-
| 12 |
| 5 |
=48-9.6
=38.4.
练习册系列答案
相关题目