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数学
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-1/8-(+1又1/3)+(3又3/4)-(-5/8)-(+4又2/3)用简便方法计算:(1)-1.5+2.25-2分之1-4分之1
人气:102 ℃ 时间:2019-08-19 03:46:27
解答
-1/8-(+1又1/3)+(3又3/4)-(-5/8)-(+4又2/3)
=-1/8-1-1/3+3+3/4+5/8-4-2/3
=-1/8+5/8-1/3-2/3+3/4-2
=2/4+3/4-1-2
=5/4-3
=-7/12
-1.5+2.25-1/2-1/4
=-1.5+2.25-0.5-0.25
=-1.5-0.5+2.25-0.25
=-2+2
=0
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