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數學有向數22題,(急)要詳細計算

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題目: (斜線的左方是分子,右方是分母) ... 顯示更多 題目: (斜線的左方是分子,右方是分母) *1,2,7,8,20題是除數 1.(+63)/(-7) 2.(-96)/(-8) 3.(-2.4)÷(+6) 4.(-1又4分之1)÷(-1又3分之1) 5.0÷(-17) 6.(-18)÷(+3)÷(-2) 7.(+3)(-6)/(-9)(斜線是分線) 8.(-8)x(-8)/(-4)(斜線是分線) 9.(+7)x(-121)÷(+11) 10.2.8÷4x(-6) 11.24÷[(-12)÷3] 12.(-36)÷[(-9)x2] 13.(+7)x(-14/1)x(+3)(斜線是分線) 14.(+18)÷(-2/9)÷(-4)(斜線是分線) 15.(+6)x(-10)÷(3又2分之1)(斜線是分線) 16.(-7/4)x[(-5)÷(-1/16)](斜線是分線) 17.(+2)(-3)-(-7)(+4) 18.(+16)+(-2)÷(-2)x(-3) 19.(-15)÷[4(-2)-(-5)] 20.(-2.7)+5.4/(+0.3)(-1) 21.[1/4 -(1/8)](-2又3分之1) 22.(-6/5)÷3/4x(-3/8)+(-4/15)x3/2

最佳解答:

1.(+63)/(-7) = -9 2.(-96)/(-8) = 12 3.(-2.4)÷(+6) = -0.4 4.(-1又4分之1)÷(-1又3分之1) (-5/4) ÷(-4/3) 15/16 5.0÷(-17) = 0 6.(-18)÷(+3)÷(-2) = 3 7.(+3)(-6)/(-9)(斜線是分線) = (-18)/(-9) = 2 8.(-8)x(-8)/(-4)(斜線是分線) = (-8) x 2 =-16 9.(+7)x(-121)÷(+11) = -77 10.2.8÷4x(-6) = -4.2 11.24÷[(-12)÷3] = 24 ÷(-4) = -6 12.(-36)÷[(-9)x2] =.(-36)÷[-18] = 2 13.(+7)x(-14/1)x(+3)(斜線是分線) = -294 14.(+18)÷(-2/9)÷(-4)(斜線是分線) = (-81) ÷ (-4) = 20.25 15.(+6)x(-10)÷(3又2分之1)(斜線是分線) =( -60)÷(7/2) = - 120/7 = -17又7分之1 16.(-7/4)x[(-5)÷(-1/16)](斜線是分線) = (35/4) )÷(-1/16) = -140 17.(+2)(-3)-(-7)(+4) =(-6) – (-28) = 22 18.(+16)+(-2)÷(-2)x(-3) = 16 + (-3) = 13 19.(-15)÷[4(-2)-(-5)] = .(-15)÷ (-3) = 5 20.(-2.7)+5.4/(+0.3)(-1) = .(-2.7)+5.4/(-0.3) = .(-2.7)+(-18) = -20.7 21.[1/4 -(1/8)](-2又3分之1) = (1/8)(7/3) = 7/24 22.(-6/5)÷3/4x(-3/8)+(-4/15)x3/2 = (-8/5) x (-3/8)+(-2/5)= (-3/5) – (2/5) = -1

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