①782﹣(534﹣218)
②786﹣479+279
③875﹣(347+375)
④786+479﹣279
⑤972+52﹣804﹣52+804
⑥849﹣828+528﹣36﹣164.
23×0.75+27×+50×75% 2﹣2÷3 ÷(+)
6﹣(2﹣) 1.25×0.25×32 8.5﹣÷
2011× 12.7×99+12.7 ×〔﹣(﹣)〕
87×101 1200﹣197.
计算:
①3×(x+9)=27
②16×8﹣7x=23
③7.5﹣7.5×0.5﹣2.6×0.8
④13.7×6.5+5.9×13.7﹣12.4×3.7
⑤50×[(0.2+4.8﹣4.8+0.2)÷2]
⑥11.25+21.25+31.25+41.25+51.25+61.25+71.25+81.25.
试题篮
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