160×6180×5 370×1037×100 30×7190
71×3200 20039×5 32×4120
(480×2)÷(80×2)= (480×3)÷80=
(480÷5)÷(80÷5)= 480÷(80×2)=
①437+(285+163)
②48×201
③699+736+101+364
④125×32
⑤199×99+99
⑥68×34+68×67-68
写作: 读作:
3.2÷0.01= 5.6+3.99= ÷ =
× = 4.1+1÷2=