2×7=
5×9=
16÷8=
21÷3=
54÷6=
6×8=
4×4=
9+9=
买4支铅笔需要多少钱?
12÷3=
71-30=
16÷4=
88+7-7=
30÷5=
35+6=
2×2=
4×4+4=
6+18=
1×4=
2+3=
5×5-5=
4×6=
4-4=
10÷2=
2+2×3=
8×7=
2×1=
6+6=
9×4+9=
5×6=
54-40=
7×5-7=
38-18+80=
80-30=
30+9=
58-40=
37+40=
22+28=
45+26=
43+25=
48-38=
59-3=
18+9=
59-11=
70-37=
18÷6= 24÷8= 42÷7= 81÷9=
64÷8= 40÷5= 8×9= 56÷7=
49÷7= 27+3= 48÷6= 54÷9=
6×2= 3×5= 4+6= 5×9= 4×1=
9×4= 7+5= 8×3= 3×6= 5+5=
×9 = 27 8×= 64 2×= 18
8×= 48 4×= 32 ×= 36
0.56÷0.8= = = =
5×( )= 30×= 0.53= 3﹣=