①38×25=
②40×26=
③481÷8=
④△508÷7=
⑴414÷9= ⑵45×92= ⑶2.1+4.8= ⑷31.8-17.2=
36÷4= 4×12= 3800-900= 36+44=
80-19= 57+33= 51÷3= 7×13=
48÷6= 0.9+0.1= 4.5-4= 1-0.8=
360÷9=
40×22=
94-57=
70×80=
0.7+4.9=
8.5-6.8=
+=
1-=
50×80=
16×50=
48×2=
4.7+3=
①21×46=
②★535÷5=
①*840÷8=
②75×18=
③231÷3=
④*45×23=
126+298= 36×= 0.36÷0.3= 2﹣= -=
÷= 0.62= 15.7÷3.14= 60×40%= 30﹣9÷=