一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25要用简便计算哈```今天一定要写好``各位.``一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 16:46:03
![一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25要用简便计算哈```今天一定要写好``各位.``一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25](/uploads/image/z/15259744-64-4.jpg?t=%E4%B8%80%E9%A2%980.23%C3%970.4%C3%970.5%E4%BA%8C%E9%A2%983.8%C3%97305%2B6.2%C3%973.5%E4%B8%89%E9%A2%98103%C3%970.23%E5%9B%9B%E9%A2%981.2%C3%9798%E4%BA%94%E9%A2%982.4%C3%971.25%E8%A6%81%E7%94%A8%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E5%93%88%60%60%60%E4%BB%8A%E5%A4%A9%E4%B8%80%E5%AE%9A%E8%A6%81%E5%86%99%E5%A5%BD%60%60%E5%90%84%E4%BD%8D.%60%60%E4%B8%80%E9%A2%980.23%C3%970.4%C3%970.5%E4%BA%8C%E9%A2%983.8%C3%97305%2B6.2%C3%973.5%E4%B8%89%E9%A2%98103%C3%970.23%E5%9B%9B%E9%A2%981.2%C3%9798%E4%BA%94%E9%A2%982.4%C3%971.25)
一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25要用简便计算哈```今天一定要写好``各位.``一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25
一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25
要用简便计算哈```今天一定要写好``各位.``
一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25
一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25要用简便计算哈```今天一定要写好``各位.``一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25
0.23×0.4×0.5 103×0.23 1.2×98
=0.23×(0.4×0.5) =(100+3)×0.23 =(1+0.2)×98
=0.23×0.2 =100×0.23+3×0.23 =1×98+0.2×98
=0.046 =23+0.69 =98+19.6
=23.69 =117.6
2.4×1.25
=0.3×8×1.25 那个3.8×305+6.2×3.5不能简便计算啊,是
=0.3×(8×1.25) 不你抄错啦?
=0.3×100
=30
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一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25要用简便计算哈```今天一定要写好``各位.``一题0.23×0.4×0.5二题3.8×305+6.2×3.5三题103×0.23四题1.2×98五题2.4×1.25
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