练习五(1) 1. 110 150 22 250 (150-40)÷5=22 400-50x3=250 『pUxuewang.com』 2. =80x23 =1840 =900-544 =356 =750÷5 =150 =420-60 =360 =60x13 =780 =153-113 =40 3. 4x12+24 =48+24 =72(人) 答:参加课外体育活动的同学一共有72人。 |