×4=
÷ =
3+ =
×5÷ ×5=
× =
÷8=
5﹣ =
( ﹣ )×24=
0.57+4.3=
×=
73×101=
-=
2.4÷0.1=
2.6×-×0.6=
3.3+6.7= 7.5﹣6= × = 4.4÷0.4=
+ = 0.4×25= ÷ = ×4.2+ ×5.8=
0.9﹣0.45= 2.7+0.3= 4÷ ×4= 9÷0.9=
0.12×0.8= + = ÷ = 2.1﹣0.21=
2.5×4+2.5×4= + = - = 0.6﹣0.06=
已修的路程占这条路全长的,剩下的路程相当于已修路程的。