请展开查看知识点列表
24×525×4 489×63000 1+2+31×2×3
8×3×28×6 602×53000 0+2+30×2×3
①382×2≈
②503×8≈
③304×7≈
④6×796≈
⑤2×198≈
⑥879×2≈
①389×6=
②108×7=
③45×6=
④※69÷4 =
⑤55÷5 =
⑥90÷5=
①*986-179=
②206+194=
③*497+826=
④472×6=
⑤*407-362=
⑥108×5=
进入组卷