练一练第1题答案
(1)14÷2+5=12(元)
(2)5-12÷3=1(元)
练一练第2题答案
(说一说略)
4+24÷8 =4+3 =7
72÷8-3 =9-3 =6
5-8÷4 =5-2 =3
45-5 ×4 =45-20 =25
86-6×8 =86-48 =38
9+81÷9 =9+9 =18
练一练第3题答案
(1)9-56÷8=2(元)
(2)买1盒酸奶和1瓶绿茶一共要用多少元?
9+18÷6=12(元)
买3盒酸奶和1桶绿茶一共要用多少元?
3×9+15 =42(元)
练一练第4题答案
24+40÷8 =24+5 =29
15-6×2 =15 -12 =3
35÷5-4 =7-4 =3
练一练第5题答案
45÷5+14 =9+14 =23
9×7-30 =63-30 =33
45+15÷3 =45+5 =50
72÷9-8 =8-8 =0
20+6×6 =20+36 =56
15-48÷8 =15-6 =9
练一练第6题答案
(1)20÷4-2=3(元)
(2)20+3×4=32(元)
(3)(答案不唯一)一套鲜花图片和一套动物图片一共多少元?
2×4+3×4=20(元)