题目内容
| 计算下面各题,能简算的要简算 8.4×0.26+0.74; | 5.5×13.3+6.7×5.5; |
| 12.5÷2.5÷0.4; | 0.8(3.2-2.99÷2.3). |
(1)8.4×0.26+0.74,
=2.184+0.74,
=2.924;
(2)5.5×13.3+6.7×5.5,
=5.5×(13.3+6.7),
=5.5×20,
=110;
(3)12.5÷2.5÷0.4,
=12.5÷(2.5×0.4),
=12.5÷1,
=12.5;
(4)0.8×(3.2-2.99÷2.3),
=0.8×(3.2-1.3),
=0.8×1.9,
=1.52.
=2.184+0.74,
=2.924;
(2)5.5×13.3+6.7×5.5,
=5.5×(13.3+6.7),
=5.5×20,
=110;
(3)12.5÷2.5÷0.4,
=12.5÷(2.5×0.4),
=12.5÷1,
=12.5;
(4)0.8×(3.2-2.99÷2.3),
=0.8×(3.2-1.3),
=0.8×1.9,
=1.52.
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