①
②
③
④
3.14×4²=
0.01²=
⑴12×=
×7.2=
12÷=
×=
⑵0÷=
0.42÷=
÷=
+=
⑶÷2=
1.8×=
÷0.5=
-=
⑷÷+=
1--=
×9 ÷=
×÷×=
①(1-×)÷75%
②-80%×+25%
③4.8÷3×50%
④7.2×25%+2.8×25%
⑤÷(+75%)
⑥12÷×60%
× ×
×0 ×1
5× 5× × ×
成绩
优秀
良好
及格
不及格
男生/人
7
10
6
1
女生/人
4
9
5
2
7.4+2.6= 40÷80= 10-0.95= 2.5×16= 6.3÷0.3=
202-98= 6- = 60×40% =
8+39= 69÷3= 400×9= 2.6+0.7=
18﹣2.5= + = ×5= 20× =
0.356×100= 4÷28= 15: = 98×12≈