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脱式计算能简算的要简算5.5x2.3 1.7x5.5怎么算

5.5x2.3+1.7x5.5 =5.5x(2.3+1.7) =5.5x4 =22 朋友,请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!!! 朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问。谢谢。

98.5一14.82÷7.6x3.2 =98.5-1.95×3.2 =98.5-6.24 =92.26

3.25÷(0.25x3.2+1.7) =13/4×4×5/16+13/4×17/10 =65/16+221/40 =383/40

7.2x5.3+ 7.2x4.6+ 7.2x0.1 =7.2x(5.3+4.6+0.1) =7.2x10 =72

3/5×1/7+2/5÷7=1/7(3/5+2/5)=1/7

=((1x5x7x8x10)x(2x11)x(3x9)x(4x6))/(27x25x24x22) =2800/25 =112

5.2×3.2+7.8x5.2一5.2 =5.2×(3.2+7.8-1) =5.2x10 =52

7/5×2/3+14/15÷1/9 =14/15×1+14/15×9 =14/15×(1+9) =14/15×10 =140/15 =28/3

=1/2*(1-1/3)+1/2*(1/3-1/5)+1/2*(1/5-1/7)+.....+1/2*[1/(2013)-1/(2015)]= =0.5*{1-1/2015}=.....

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