6-3.75= -25%= +0.75= 1.5- =
( + )×4= 0.1×0.99= 0×0.75= ÷6=
1÷ - ÷1=
:和16:18 12:18和8:16 0.2:0.7和7:14
组成的比例:( )
905-598= 0.3+7= 0.72÷0.6= 6÷7= 0.45×6×0.5=
÷ = + = 4÷ ×9= × = × ÷ × =
0.3÷= 5-= ×12= (4.2+)×2×0=
3.7+5= 300×0.3%= ×= 3×1+3×=
① 9.7+3%= ②0.1×102= ③8.36-1.6= ④100%-0.1=
⑤ 7.8-8%= ⑥42π= ⑦1.5÷= ⑧×60%=