计算 【1-(1-0.51/3)】【2-(-3)²】
计算 【1-(1-0.51/3)】【2-(-3)²】
【1-(1-0.51/3)】【2-(-3)²】
=[1-(1- 1/6)]x[2-9]
=[1- 5/6]x(-7)
=(1/6)x(-7)
=- 7/6
计算-1-【2-(1-1/3×0.5)】×【3²-(-2)²】
-1-【2-(1-1/3×0.5)】×【3²-(-2)²】
=-1-(2-1+1/6)×(9-4)
=-1-7/6×5
=-41/6
计算 (-5)²/3²(-1/3)
解
(-5)²/3²×(-1/3)
=25/9×(-1/3)
=-25/(9×3)
=-25/27
计算:-1^4+(1-0.5)×1/3×[2-(-3)^2]=?
原式-1+0.5×1/3×(2-9)=-1+(-7/6)=-13/6
计算:√12-(2-√3)-1-(1/5)0
√12-(2-√3)-1-(1/5)0
2√3-(2+√3)-1
√3-3
-1-|0.5- 2/3|÷1/3×[-2-(-27)]
-1-|0.5- 2/3|÷1/3×[-2-(-27)]
=-1-|-1/6|÷1/3×25
=-1-1/6×3×25
=-1-25/2
=-13.5
1/8/31/8的简便计算
1/8/31/8的简便计算
解:
1/8÷31/8
=1/24×1/8
=1/192
[1-(1-0.5*1/3)]*[2-(-3)的平方]
[1-(1-0.5*1/3)]*[2-(-3)的平方]
=(1-1+1/6)x(2-9)
=1/6x-7
=-7/6
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-1^4-(1-0.5)*1/3*[2-(-3)²]=?
-1^4-(1-0.5)*1/3*[2-(-3)²]
=-1-1/2*1/3*(2-9)
=-1-1/6*(-7)
=-1+7/6
=1/6
计算 [1-【-0.5×3分之1】]×[2-【-3】的2次方]
原式=[1-【-6分之1】]×[2-9]
=6分之7×(-7)
=-6分之49