4+ = + = ×18= - = 1- ÷ =
×3= ÷3= ×2.4= ÷ = 8× ÷8× =
① + +
② + ×
③86×
④( + )÷
⑤ × +
⑥6×12×( - )
m3=dm3 kg=kgg
36× 36 ÷3
× × ÷