题目内容
计算:
(1)[14.8+(3
-1.5)×1
]÷4
(2)3.5÷1
+6.5×[12×(
-0.3)-0.15)].
(1)[14.8+(3
| 3 |
| 8 |
| 1 |
| 25 |
| 3 |
| 4 |
(2)3.5÷1
| 8 |
| 9 |
| 5 |
| 6 |
(1)[14.8+(3
-1.5)×1
]÷4
,
=[14.8+1.875×1
]÷4
,
=[14.8+1.95]÷4
,
=16.75÷4
,
=
;
(2)3.5÷1
+6.5×[12×(
-0.3)-0.15],
=3.5÷1
+6.5×[12×
-0.15],
=3.5÷1
+6.5×[6.4-0.15],
=3.5÷1
+6.5×6.25,
=
+40.625,
=42
.
| 3 |
| 8 |
| 1 |
| 25 |
| 3 |
| 4 |
=[14.8+1.875×1
| 1 |
| 25 |
| 3 |
| 4 |
=[14.8+1.95]÷4
| 3 |
| 4 |
=16.75÷4
| 3 |
| 4 |
=
| 67 |
| 19 |
(2)3.5÷1
| 8 |
| 9 |
| 5 |
| 6 |
=3.5÷1
| 8 |
| 9 |
| 8 |
| 15 |
=3.5÷1
| 8 |
| 9 |
=3.5÷1
| 8 |
| 9 |
=
| 63 |
| 34 |
=42
| 65 |
| 136 |
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