Question

759-28×18+198÷22的简便计算？

759-28×18+198÷22的简便计算

Answer 1

759-28*18+198÷22
=759-28*（20-2）+9
=759-28*20+28*2+9
=759-560+56+9
=196+56+9
=252+9
=261

Answer 2

759-28×18+198÷22
=759-28×18+(220-22)÷22
=759-28×18+220÷22-22÷22=759-28×18+9
=759-(25×2×10+2×2)+9
=759-504+9
=254+9
=263