=4.2 ÷=27 74:=6:0.3
1-15%=
24÷5
10%+1%=
1-25%-60%=
÷7=
×9×=
×=
×(18+)=
+×12=
÷60%=
(3+)×0=
50%+=
×÷×=
17.15-(3.5-2.85)=
多少页?
=÷=。
7.4+2.6= 40÷80= 10-0.95= 2.5×16= 6.3÷0.3=
202-98= 6- = 60×40% =