150÷2.5-3.6×7.5的简便计算的简便计算法

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150÷2.5-3.6×7.5的简便计算的简便计算法
150÷2.5-3.6×7.5的简便计算的简便计算法

150÷2.5-3.6×7.5的简便计算的简便计算法
150÷2.5-3.6×7.5
=60-0.9×(4×7.5)
=60-0.9×30
=60-27
=33

150/2.5-3.6*7.5
=150/5/0.5-4*7.5*0.9
=60-30*0.9
=33

31.4-40.5÷7.5
=31.4-(40.5×4)÷(7.5×4)
=31.4-162÷30
=31.4-5.4
=26