计算下面各题,怎样简便就怎样算.214×27-14×27 478-163-137 ...
计算下面各题,怎样简便就怎样算.214×27-14×27478-163-1375000÷125÷899×3444×25125×15×8136×101-136591+482...
计算下面各题,怎样简便就怎样算.214×27-14×27 478-163-137 5000÷125÷8 99×34 44×25 125×15×8 136×101-136 591+482+118 42+99+68+1
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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)99×34
=100×34-1×34
=3400-34
=3366;
(5)44×25
=11×(4×25)
=11×100
=1100;
(6)125×15×8
=125×8×15
=1000×15
=15000;
(7)136×101-136
=136×(101-1)
=136×100
=13600;
(8)591+482+118
=591+(482+118)
=591+600
=1191;
(9)42+99+68+1
=(42+68)+(99+1)
=110+100
=210.
=(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)99×34
=100×34-1×34
=3400-34
=3366;
(5)44×25
=11×(4×25)
=11×100
=1100;
(6)125×15×8
=125×8×15
=1000×15
=15000;
(7)136×101-136
=136×(101-1)
=136×100
=13600;
(8)591+482+118
=591+(482+118)
=591+600
=1191;
(9)42+99+68+1
=(42+68)+(99+1)
=110+100
=210.
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