①89×
②
③
④×6.8+4.2×4.75-4.75
⑤
①
④
⑥
⑴30%×2.84=
⑵6+94%=
⑶(求比值)3:20%=
⑷8×=
⑸=
⑹(化简比)=
画出了50%
画出了80%
⑴ ⑵ ⑶ ⑷ ⑸ ⑹
×88+11×
×48
÷9
①+8× ②×-×
③-86× ④36×(+-)