10×48= 3×500= 630÷9= + = 1.7-0.6=
20×30= 5.3+4.1= 7.8-3.5= - = 450÷5=
315÷3= 37×18= △496÷7=
25×4= 91÷7= 5×400= 5×(71+29)= 600÷3=
60×50= 60+90= 10×35= - = + =
- = + = 96÷6= 20×25= 700-7=
3.2-0.8= 80+30= 900÷3= 0÷200= 5×10÷5×10=
93÷3=
60×90=
210×40=
9-9÷9=
2.8+1.2=
5.6-3.1=
6300÷9=
0÷9×24=
325÷8≈
65×99≈
32×20=
=
51×59≈
50×40=
8.2﹣6=
3+3.5=
2.1+7.9=
89×12≈