计算下面各题,能简算的要简算.(125+7)×8  ...
计算下面各题,能简算的要简算.(125+7)×832×38+32×6225×443.27+6.4+2.73+4.66.45-0.58-1.4212×(324-285)÷2...
计算下面各题,能简算的要简算.(125+7)×8 32×38+32×62 25×44 3.27+6.4+2.73+4.6 6.45-0.58-1.42 12×(324-285)÷26.
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(1)(125+7)×8
=125×8+7×8
=1000+56
=1056;
(2)32×38+32×62
=32×(38+62)
=32×100
=3200;
(3)25×44
=25×(4×11)
=25×4×11
=100×11
=1100;
(4)3.27+6.4+2.73+4.6
=(3.27+2.73)+(6.4+4.6)
=6+11
=17;
(5)6.45-0.58-1.42
=6.45-(0.58+1.42)
=6.45-2
=4.45;
(6)12×(324-285)÷26
=12×39÷26
=468÷26
=18.
=125×8+7×8
=1000+56
=1056;
(2)32×38+32×62
=32×(38+62)
=32×100
=3200;
(3)25×44
=25×(4×11)
=25×4×11
=100×11
=1100;
(4)3.27+6.4+2.73+4.6
=(3.27+2.73)+(6.4+4.6)
=6+11
=17;
(5)6.45-0.58-1.42
=6.45-(0.58+1.42)
=6.45-2
=4.45;
(6)12×(324-285)÷26
=12×39÷26
=468÷26
=18.
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