203×(50-40÷5)简便计算如何算?
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203×(50-40÷5)简便计算如何算?
203×(50-40÷5)简便计算如何算?
203×(50-40÷5)简便计算如何算?
203×(50-40÷5)
=203*(50-8)
=(200+3)*42
=200*42+3*42
=8400+126
=8526
203×(50-40÷5)
=200*50-200*8+3*50-3*8
=10000-1600+150-24
=8526
原式=203×(50-8)
=203×42
=203×(40+2)
=203×40+203×2
=8120+406
=8526