1800÷45= 6.4+9.6= 0.875﹣= 12×98≈
56×= 1.6×125%= ×24÷= 9+11+13+……+41=
①58+399=
②1122÷11=
③0.1÷=
④×54=
⑤0.24×5=
⑥1÷0.375=
⑦-=
⑧20÷10%=
⑨23+12=
⑩12×()=
⑪0.25×4÷0.25×4=
⑫+÷+=
70×5=
0.6÷0.1=
23.2+6=
32+22=
=
30×20%=
1÷3=
11×40=
810÷30=
÷ =
20×498≈
9.8÷0.01=
2.05﹣0.5=
8×25%=
2﹣ =
÷5=
4.58+5.42=
×4=
3÷40%=
÷=
÷×0=
∶=
-0.25=
0.78×=
24.8-4.8÷=
①+++
②(-+)×24
③1.5×+8.5×
④4×0.8×2.5×12.5
⑤25××40%×
⑥÷[(+)×]
①(+-)÷
②12-(1+2)
③5÷[(+)×]
④2.5×3.2×0.125
⑤0.125×+×8.25+12.5%
⑥÷﹣
56×10%= 3.2+1.78= ﹣= 0.72÷0.6=
1.25×8= 4÷= ×= ×6÷×6=