计算下面各题,怎样简便就怎样算.(125+7)×8 3.27+6.4+2.73+4.6 124×5+169÷13 25×44 6.45-0.
计算下面各题,怎样简便就怎样算.(125+7)×83.27+6.4+2.73+4.6124×5+169÷1325×446.45-0.58-1.4212×(324-285)...
计算下面各题,怎样简便就怎样算.(125+7)×8 3.27+6.4+2.73+4.6 124×5+169÷13 25×44 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)3.27+6.4+2.73+4.6, =(3.27+2.73)+(6.4+4.6), =6+11, =17; (3)124×5+169÷13, =620+13, =633; (4)25×44, =25×4×11, =100×11, =1100; (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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