x=
3.6-0.4= 24×0.5= 0.6+0.24= + =
×0.27= 1.4÷ = 0.25- = 5-5÷6=
9.3×7.9≈ ×0.5=1 × =
+ = ÷2= ×5÷ ×5=
0.42×= 0.561×100=
162÷8≈ 10÷1%= - = 6.9 - 6=
308×9≈ - = 0÷ ÷ = 243+157=
x÷25%-30=50
5×6%= 0.8 0.04= 234-98= 6.5-22=
x+50%x=120÷2
x=( )
①x﹣ =0.25
② x﹣ =120
③ =50%
①1.5x-2.8=4.7
②
③12: =
②x: =4: .