555555555555...帮我写二道数学题吧,\(≥▽≤)/~
①-1^2006-(1+0.5)×3分之1÷(-4)
②-1^4÷(-5)^2×(-3分之5)+|0.8-1|
人气:333 ℃ 时间:2020-02-04 01:13:54
解答
(1)-1^2006-(1+0.5)×3分之1÷(-4)
=-1-1/2×1/3×(-4)
=1-1/6×(-4)
=1+2/3
=5/3
(2)-1^4÷(-5)^2×(-3分之5)+|0.8-1|
=-1×1/25×(-5/3)+1/5
=1/15+1/5
=1/15+3/15
=4/15
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