计算:
54×102
1440×976÷488
2003×2005﹣2002×2006
9999×2222+3333×3334
6363÷7÷9
6363×464÷232.
下面各题,怎样简便就怎样计算.
1700÷20÷5 6300÷(63×5) 450÷18
4000÷125÷8 125×(8+20) 99×45+45.
计算.
25×19×64×125=
2000﹣2001+2002﹣2003+2004﹣2005+2006﹣2007+2008﹣2009+2010﹣2011+2012=
①8(2x+2.6)=32
②1.25×3.2×2.5
③4.6×2.89+6.11×4.6+4.6
④1995×1995+1994×1994﹣1995×1994﹣1994×1993.
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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