题目内容
计算下面各题.
| 15.6×0.8+6.12÷3.4 | 9.4×[6.2÷(7-6.8)] |
| 0.48×4.2+5.8×0.48 | [0.45×(4.5+3.7)]÷1.2. |
(1)15.6×0.8+6.12÷3.4,
=12.48+1.8,
=14.28;
(2)9.4×[6.2÷(7-6.8)],
=9.4×[6.2÷0.2],
=9.4×31,
=291.4;
(3)0.48×4.2+5.8×0.48,
=0.48×(4.2+5.8),
=0.48×10,
=4.8;
(4)[0.45×(4.5+3.7)]÷1.2,
=[0.45×8.2]÷1.2,
=3.69÷1.2,
=3.075.
=12.48+1.8,
=14.28;
(2)9.4×[6.2÷(7-6.8)],
=9.4×[6.2÷0.2],
=9.4×31,
=291.4;
(3)0.48×4.2+5.8×0.48,
=0.48×(4.2+5.8),
=0.48×10,
=4.8;
(4)[0.45×(4.5+3.7)]÷1.2,
=[0.45×8.2]÷1.2,
=3.69÷1.2,
=3.075.
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