题目

脱式计算. (1) 24×( ﹣ ) (2) ﹣ × (3) (4) ÷[ ×( ﹣ )] 答案: 24×( 78 ﹣ 112 ) =24× 78 ﹣24× 112 =21﹣2 =19 45 ﹣ 78 × 314 = 45 ﹣ 316 = 4980 518÷125×34 = 25216 × 34 = 25288 25 ÷[ 34 ×( 34 ﹣ 712 )] = 25 ÷[ 34 × 16 ] = 25 ÷ 18 = 165
数学 试题推荐
最近更新