Question

Oblicz.. ( liczby wymierne )

a) (0,6) + 2⅜ + ( -7⅝ ) + (-½) + 0 =
b) 20 + (-16,3) + ( +4⅓) + (-18⅔)=
c) -10 + 8,5 + 12,3
d)-10 + 8,5 + (-12,3)
e)10+8,5+(-12,3)
f)10+(-8,5)+(-12,3)

Answer 1

a) (0,6) + 2⅜ + ( -7⅝ ) + (-½) + 0 = 6/10 + 19/8 - 61/8 - 1/2 = 48/80 + 190/80 - 610/80 - 40/80 = - 412/80 = - 5 12/80 = -5 3/20

 

b) b) 20 + (-16,3) + ( +4⅓) + (-18⅔)= 20 - 16 3/10 + 4 1/2 - 18 2/3 = 20 - 163/10 + 13/3 - 56/3 = 600/30 - 489/30 + 130/30 - 560/30 = -319/30=

= -10 19/30

 

c) -10 + 8,5 + 12,3 = -10 + 8 5/10 + 12 3/10 = - 100/10 + 85/10 + 123/10 = 108/10 = 10 4/5

 

d)-10 + 8,5 + (-12,3) = -10 + 8 5/10 - 12 3/10 = -100/10 + 85/10 - 123/10 = -138/10 = -13 4/5

 

e)10+8,5+(-12,3) = 10 + 8 5/10 - 12 3/10 = 100/10 + 85/10 -123/10 = 62/10 = 6 1/5

 

f)10+(-8,5)+(-12,3) = 10 - 8 5/10 - 12 3/10 = 100/10 - 85/10 - 123/10 = -108/10 = - 10 4/5

 

Pozdrawiam ;)

Answer 2

a)

(0,6) + 2⅜ + ( -7⅝ ) + (-½) + 0 = 0,6+2,375-7,625-0,5+0 = -5,15
b)

20 + (-16,3) + ( +4⅓) + (-18⅔)= 20-16³/₁₀+4⅓-18⅔ = 3⁷/₁₀+4⅓-18⅔ = 8¹/₃₀-18⅔ = -10¹⁹/₃₀
c)

-10 + 8,5 + 12,3 = -1,5+12,3 = 10,8
d)

-10 + 8,5 + (-12,3) = -1,5-12,3 = -13,8
e)

10+8,5+(-12,3) = 18,5-12,3 = 6,2
f)10+(-8,5)+(-12,3) = 1,5-12,3 = -10,8