÷3=
×15=
1+2%=
+ × =
2- =
×75%=
×4× =
×9÷ ×9=
: =6:x
300﹣187=
7.2÷36=
8.63+5=
4.7×100=
2600﹣279﹣321=
+=
×=
72÷=
-=
××=
= = 3.2-﹣1.25= 5÷-÷5=
= 298÷59≈ 400÷125÷8=
- = × = 80÷10%= 42×3.14=
30%+0.45= 3.6÷0.18= 2- = 6- - =
5.2÷0.04= 1.32+0.8= 8 ÷8= 25+7.5=
51.51÷51= + ÷ = 1.5×2÷1.5×2= 149÷30≈
丽丽
玲玲
兰兰
第一次
15
16.2
14.3
第二次
14.8
15.7
14.6