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(2013•鲁山县模拟)怎样简便就怎样算16.4+3.5+83.6+166.545×38.3+2.7×0.8498+9870÷35420.5-294÷2.8×2.1.
题目详情
(2013•鲁山县模拟)怎样简便就怎样算
16.4+3.5+83.6+166.5
×38.3+2.7×0.8 16.4+3.5+83.6+166.5
×38.3+2.7×0.8
×38.3+2.7×0.8
4 4 5 5 498+9870÷35 420.5-294÷2.8×2.1. 498+9870÷35 420.5-294÷2.8×2.1.
16.4+3.5+83.6+166.5 |
| ||
498+9870÷35 | 420.5-294÷2.8×2.1. |
16.4+3.5+83.6+166.5 |
| ||
498+9870÷35 | 420.5-294÷2.8×2.1. |
4 |
5 |
4 |
5 |
4 |
5 |
4 |
5 |
▼优质解答
答案和解析
(1)16.4+3.5+83.6+166.5,
=(16.4+83.6)+(3.5+166.5),
=100+170,
=270;
(2)
×38.3+2.7×0.8,
=0.8×38.3+2.7×0.8,
=0.8×(38.3+2.7),
=0.8×41,
=32.8;
(3)498+9870÷35,
=498+282,
=780;
(4)420.5-294÷2.8×2.1,
=420.5-105×2.1,
=420.5-220.5,
=200.
4 4 45 5 5×38.3+2.7×0.8,
=0.8×38.3+2.7×0.8,
=0.8×(38.3+2.7),
=0.8×41,
=32.8;
(3)498+9870÷35,
=498+282,
=780;
(4)420.5-294÷2.8×2.1,
=420.5-105×2.1,
=420.5-220.5,
=200.
(1)16.4+3.5+83.6+166.5,
=(16.4+83.6)+(3.5+166.5),
=100+170,
=270;
(2)
4 |
5 |
=0.8×38.3+2.7×0.8,
=0.8×(38.3+2.7),
=0.8×41,
=32.8;
(3)498+9870÷35,
=498+282,
=780;
(4)420.5-294÷2.8×2.1,
=420.5-105×2.1,
=420.5-220.5,
=200.
4 |
5 |
=0.8×38.3+2.7×0.8,
=0.8×(38.3+2.7),
=0.8×41,
=32.8;
(3)498+9870÷35,
=498+282,
=780;
(4)420.5-294÷2.8×2.1,
=420.5-105×2.1,
=420.5-220.5,
=200.
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