74*1042/37*(-9/37)/(-521)-38*36/37

74*1042/37*(-9/37)/(-521)-38*36/37


-36



74×1042÷37×(-37分之9)÷(-521)—38×37分之36=多少?


負37分之36



38×36/37—74×1042÷37×9/37÷521用簡便方法


38×36/37—74×1042÷37×9/37÷521
=(37+1)(37-1)/37-37×2×2×521÷37×9÷37÷521
=37²;/37-1/37-36/37
=37-1
=36



0.38除以十二分之五加上3.8乘以0.76等於多少(簡便計算)


0.38÷5/12+3.8x0.76
=0.38x2.4+0.38x7.6
=0.38x(2.4+7.6)
=0.38x10
=3.8