(1)(-16-50+3又5分之2)÷(-2)(2)(-6)×8-(-2)대-(-4)눀×5

2025-01-01 20:46:27
推荐回答(2个)
回答1:

解:
(1) (-16-50+3又5分之2)÷(-2)
=(-66+17/5)÷(-2)
=33-17/10
=313/10
=31.3

(2) (-6)×8-(-2)³-(-4)²×5
=-48+8-16×5
=-40-80
=-120

(3) (-2分之1)²+2分之1×(3分之2-│3分之2-2│)
=1/4+1/2×(2/3-2+2/3)
=1/4+1/2×(4/3-2)
=1/4+(2/3-1)
=1/4+2/3-1
=-1/12

(4) -1-(1-0.5)×3分之1
=-1-0.5×1/3
=-1-1/6
=-7/6

回答2:

(1)(-16-50+3又5分之2)÷(-2)
=-62.6÷(-2)
=31.3

(2)(-6)×8-(-2)³-(-4)²×5
=-48+8-80
=-120

(3)(-2分之1)²+2分之1×(3分之2-│3分之2-2│)
=1/4+1/12
=1/3

(4)-1-(1-0.5)×3分之1
=-1-1/6
=-1又1/6

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