201×3=
224÷2=
6×7+9=
607×0=
9×300=
363÷3=
32×3+1=
0÷9=
①409×3=
②9×284=
③98×6=
④5×740=
32×3= 600×2= += 21×4= 0×81=
13×3+40= 1-= += -= +=
60×8=
100-78=
403×5≈
417+298≈
650+180=
25× 6=
80-20×2=
1-=
47+33= 800-140= 700-320= 86-44=
550+360= 77-35= 302+298= 760-260=
- = + = 1- = + + =
420+80= 780-80= 400×6= 298×7≈
203×4≈
13+29= 42-36= 78-28= 520+300= 54÷6=
480-82= 64+25= 1000-9= 109-5×4= 5200-800=