下面各题怎么计算简便就怎么计算.
6.01﹣2.9+7.99
29.44﹣(9.44+0.825)
15.36﹣(6.3﹣4.64)
5.9+0.2﹣5.9﹣1﹣0.2.
先用计算器计算,再观察概括出规律.
(1)34×101=
48×101=
84×101=
…
AB×101=
(2)348×1001=
856×1001=
627×1001=
…
ABC×1001=
64×2.5×0.125 3×0.8+3×2.2 3.76÷0.4÷2.5
(14.21+3.5)÷7 4.66×0.28+4.66×0.82﹣4.66 2.4+57.6÷36.
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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