①205×84=
②★37×221=
③540×18=
④490÷35=
⑤979÷42=
⑥★416÷41=
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★★★
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1-0.92= - = ×3.2= ÷ ×5=
3.5+4.28= × = ÷ = 99×0.9+0.9=