计算下列各题,能简便的要用简便方法计算.
425÷1.25÷8 4.23÷3.6+7.4 0.75×99
6.3+3.7×2.5 4.28×11﹣4.28 12.5×3.2.
0.25×27×4 45×36+64×45 1.25×320×25 0.96×25
9.9×999+9.9 1.08×125 8×25×1.25×16 489×101﹣489
33×1.03 28×45+30×13 5.6×9+56 0.98×54.
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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