计算下面各题,怎样简便就怎样算.214×27-14×27 ...
计算下面各题,怎样简便就怎样算.214×27-14×27478-163-1375000÷125÷8281+93+119+20799×34104×16...
计算下面各题,怎样简便就怎样算.214×27-14×27 478-163-137 5000÷125÷8 281+93+119+207 99×34 104×16
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(1)214×27-14×27
=(214-14)×27
=200×27
=5400;
(2)478-163-137
=478-(163+137)
=478-300
=178;
(3)5000÷125÷8
=5000÷(125×8)
=5000÷1000
=5;
(4)281+93+119+207
=(281+119)+(93+207)
=400+300
=700;
(5)99×34
=(100-1)×34
=100×34-34
=3400-34
=3366;
(6)104×16
=(100+4)×16
=100×16+4×16
=1600+64
=1664.
=(214-14)×27
=200×27
=5400;
(2)478-163-137
=478-(163+137)
=478-300
=178;
(3)5000÷125÷8
=5000÷(125×8)
=5000÷1000
=5;
(4)281+93+119+207
=(281+119)+(93+207)
=400+300
=700;
(5)99×34
=(100-1)×34
=100×34-34
=3400-34
=3366;
(6)104×16
=(100+4)×16
=100×16+4×16
=1600+64
=1664.
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①214×27-14×27
=27×(214-14)
=27×200
=5400
②478-163-137
=478-(163-137)
=478-300
=178
③5000÷125÷8
=5000÷(125×8)
=5000÷1000
=5
④281+93+119+207
=(281+119)+(93+207)
=400+300
=700
⑤99×34
=(100-1)×34
=3400-34
=3366
=27×(214-14)
=27×200
=5400
②478-163-137
=478-(163-137)
=478-300
=178
③5000÷125÷8
=5000÷(125×8)
=5000÷1000
=5
④281+93+119+207
=(281+119)+(93+207)
=400+300
=700
⑤99×34
=(100-1)×34
=3400-34
=3366
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273-(73+27)
=273-100
=173
=273-100
=173
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