买4支铅笔需要多少钱?
32÷8=
26+14=
6×6+6=
25+16=
24÷3=
14÷2=
35÷5=
20÷4=
7×3=
7×5-3=
4×8+3=
35÷7=
8+39= 69÷3= 400×9= 2.6+0.7=
18﹣2.5= + = ×5= 20× =
0.356×100= 4÷28= 15: = 98×12≈