①
②
③
④
⑤
⑥58×0.6+42×
③2.7-3x=
÷10= ÷= += ÷=
×2.4= ÷= ×= -=
×÷×= 24×(++)=
=
÷0.3=
54π÷9+π=
km2 :公顷=
0.25× 80%=
0.52-0.42 =
3.6×()=
÷=
÷= ×= 1.02﹣0.43= 597×8≈
126÷3= 0.25×0.8= 1÷25%= 725÷92≈