Question

【题目】(2016·河北涿州)计算，能简算的要简算。
①80.3-33.3×0.5÷0.37
② ×[ ÷( + )]
③ ×40- ÷
④ ×12.5× ×8
⑤（ + ）×8+
⑥(1- ÷ )×

Answer 1

【答案】解：
①80.3-33.3×0.5÷0.37
=80.3-33.3÷0.37 ×0.5 =80.3-90×0.5 =80.3-45 =35.3
② ×[ ÷( + )]
= ×（ ÷ ）
= × ×
=
③ ×40- ÷
= ×40- ×40
=（ - ）×40
= ×40
=5
④ ×12.5× ×8
= × ×（12.5×8）
= ×100
=125
⑤（ + ）×8+
= ×8+ ×8+
=5+ +
=5+（ + ）
=5+1
=6
⑥(1- ÷ )×
=（1- ）×
= ×
=