题目内容
计算
| 2037-2037÷21. | 4375+884÷26×25. | ||||||
| 8.5+(5.6-4.8)×13. | [9.2+0.8×(9-7.75)]÷0.4. | ||||||
(
| 2.25×1.8+1.25×0.18. | ||||||
[17.1-17.1÷(3.1-2
|
(1)2037-2037÷21
=2037-97
=1940;
(2)4375+884÷26×25
=4375+34×25
=4375+850
=5225;
(3)8.5+(5.6-4.8)×13
=8.5+0.8×13
=8.5+10.4
=18.9;
(4)[9.2+0.8×(9-7.75)]÷0.4
=[9.2+0.8×1.25]÷0.4
=[9.2+1]÷0.4
=10.2÷0.4
=25.5;
(5)(
+
)÷
=
×
+
×
=
+
=
;
(6)2.25×1.8+1.25×0.18
=2.25×1.8+0.125×1.8
=1.8×(2.25+0.125)
=1.8×2.375
=4.275;
(7)[17.1-17.1÷(3.1-2
)]×599
=[17.1-17.1÷1]×599
=0×599
=0.
=2037-97
=1940;
(2)4375+884÷26×25
=4375+34×25
=4375+850
=5225;
(3)8.5+(5.6-4.8)×13
=8.5+0.8×13
=8.5+10.4
=18.9;
(4)[9.2+0.8×(9-7.75)]÷0.4
=[9.2+0.8×1.25]÷0.4
=[9.2+1]÷0.4
=10.2÷0.4
=25.5;
(5)(
| 5 |
| 12 |
| 5 |
| 18 |
| 5 |
| 8 |
=
| 5 |
| 12 |
| 8 |
| 5 |
| 5 |
| 18 |
| 8 |
| 5 |
=
| 2 |
| 3 |
| 4 |
| 9 |
=
| 10 |
| 9 |
(6)2.25×1.8+1.25×0.18
=2.25×1.8+0.125×1.8
=1.8×(2.25+0.125)
=1.8×2.375
=4.275;
(7)[17.1-17.1÷(3.1-2
| 1 |
| 10 |
=[17.1-17.1÷1]×599
=0×599
=0.
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