10.4×5=
1.64+0.4=
=
+0.2=
1.5÷25%=
1÷4×=
1÷= = 1.1+0.11= 2.4×50%= 0.24÷0.8=
= 8×= 10﹣0.99= 0.22= 4×25%÷4×25%=
0.25×8= 50%×0.4= 7÷7%= 23=
x+50%x=120÷2
x=( )
x÷25%-30=50
x=
①x﹣ =0.25
② x﹣ =120
③ =50%
①1.5x-2.8=4.7
②
③12: =
②x: =4: .