2.5×40=
+ =
3.4× =
0.2÷ =
5- =
×60=
÷ =
×25%=
4+0.7x=102
x=3600
0.1-0.01= 6.8÷10%= 3.6÷0.12= 398÷42≈
0.22= × = 24÷ = ×4÷ ×4=
5.4÷0.09= 7.75+3.86-7.75+1.14= 2.5×0.99×0.4=
26.2+38= 40×0.1÷0.001= 56.27- 3.73-46.27=