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①70-29.6-10.4
②283×5+17×5
③73+3.4+27+5.6
④10-2.75-3.25
⑤85×99
⑥25×64×125
35÷0.1= 3.7+2.53= 700÷35= 75×20=
×15= ÷ = - = + =
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