(720+63)÷9简便运算
脱式计算(能简便的用简便方法计算)960-720÷8×912×(736-656÷16)360÷9+3×21927÷[630÷(34+36)]125×(8×2)+10012...
脱式计算(能简便的用简便方法计算) 960-720÷8×9 12×(736-656÷16) 360÷9+3×21 927÷[630÷(34+36)] 125×(8×2)+100 125×88 230×24+240×77 46×101-146 (841-41)÷25×4.
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(1)960-720÷8×9, =960-720÷8÷9, =960-810, =150; (2)12×(736-656÷16), =12×(736-41), =12×695, =12×(700-5), =12×700-12×5, =(10+2)×700-60, =7000+1400-60, =8340; (3)360÷9+3×21, =40+63, =103; (4)927÷[630÷(34+36)], =927÷[630÷70], =927÷9, =103; (5)125×(8×2)+100, =125×8×2+100, =1000×2+100, =2000+100, =2100; (6)125×88, =125×8×11, =1000×11, =11000; (7)230×24+240×77, =23×240+240×77, =240×(23+77), =240×100, =24000; (8)46×101-146, =46×(100+1)-146, =4600+46-146, =4600-(146-46), =4600-100, =4500; (9)(841-41)÷25×4, =800÷25×4, =8×100÷25×4, =8×(100÷25)×4, =8×4×4, =32×4, =128.
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