题目

下列各题怎样简便就怎样算. (1) 6+3÷ (2) 24×( + + ) (3) ÷5+ × (4) ×0.375÷ 答案: 解:6+3÷ 16 =6+18 =24 解:24×( 38 + 16 + 512 ) =24× 38 +24× 16 +24× 512 =9+4+10 =23 解: 13 ÷5+ 23 × 15 = 13 × 15 + 23 × 15 =( 13 + 23 )× 15 =1× 15 = 15 解: 29 ×0.375÷ 67 = 112 ÷ 67 = 772
数学 试题推荐