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下列各题怎样简便就怎样算.283+649+135123×101315×8×12535×27+73×35788-(188+56)25×5×4×200
题目详情
下列各题怎样简便就怎样算.
283+649+1351 | 23×101 | 315×8×125 |
35×27+73×35 | 788-(188+56) | 25×5×4×200 |
▼优质解答
答案和解析
(1)283+649+1351
=283+(649+1351)
=283+2000
=2283;
(2)23×101
=23×(100+1)
=23×100+23×1
=2300+23
=2323;
(3)315×8×125
=315×(8×125)
=315×1000
=31500;
(4)35×27+73×35
=35×(27+73)
=35×100
=3500;
(5)788-(188+56)
=788-188-56
=600-56
=544;
(6)25×5×4×200
=(25×4)×(5×200)
=100×1000
=100000.
=283+(649+1351)
=283+2000
=2283;
(2)23×101
=23×(100+1)
=23×100+23×1
=2300+23
=2323;
(3)315×8×125
=315×(8×125)
=315×1000
=31500;
(4)35×27+73×35
=35×(27+73)
=35×100
=3500;
(5)788-(188+56)
=788-188-56
=600-56
=544;
(6)25×5×4×200
=(25×4)×(5×200)
=100×1000
=100000.
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