5+5÷10=
1+10%=
1﹣0.625=
43÷10%=
1.6×0.3=
1.25×3×8=
2.5×4= ×= ÷= ﹣0.25=
﹣= 1﹣﹣= 1÷20%= 80%×=
+= ﹣= 24×= 5﹣=
30÷= += +0.25= ÷=
(个)
口诀:
(本)或(本)
①x:3=:
②=
③:=:x
④:x=3:12
⑤:x=5%:0.6
⑥=