Question

3.55×1.8+35.5x0.38-0.355的简便计算

Answer 1

3.55×1.8+35.5x0.38-0.355,简灶旦薯便计算隐者迟隐:
原式
=3.55x1.8+3.55x3.8-3.55x0.1
=3.55(1.8+3.8-0.1)
=3.55x5.5=19.525

Answer 2

因为3.55×1.8=35.5×0.18，0.355=35.5×0.01。哗差仿所以庆橘原式等于35.5×0.18+35.5×0.38-35.5×0.01，运乱纤用乘法分配律逆运算可以有35.5×（0.18+0.38-0.01）=19.525