Question

Oblicz

a) 1,25 + (-2 3/4) =

b) 4 5/8 - 1,125=

c) -7,5 + 3 1/2=

d) -4,3 - 2 5/6=

e)-2 1/2 - (-4,2)=

f) - 5,04 + (-3 1/4)=

g) 6,06 + (-8 1/8)=

h) 3/4 * (-5,2)=

i) (-4 2/7) * (-3,5)=

j) -2,2 : 1 5/6=

k) 6 1/4 : (-2,5) =

l) ( -2 1/4 ) : (-2 4/7) =

m) -0,6 : (-1 2 / 25) : (-2 1 / 2) =

Answer 1

a = 1,25-2,75 = - 1,5

b = 4,625 - 1,125 = 4,5

c = -7,5 + 3,5 = -4

d = -4 i 3/10 - 2 i 5/6 = -3 i 39/30 - 2 i 25/30 = -5 i 64/30 = -7 i 4/30 = -7 i 2/15

e = -2,5 + 4,2 = 1,7

f = -5,04 - 3,25 = -8,29

g = 6.06 - 8,125 = 2,065

h = 0,75 x -5,2 = - 3,9

i = -30/7 x - 35/10 = 1050/70 = 15

j = -2 i 2/10 : 1 i 5/6 = - 22/10 x 6/11 = - 132/220 = - 0,6 = - 3/5

k = 6,25: - 2,5 = - 2,5

l = -9/4 : - 18/7 = 9/4 x 7/18 = 7/8

m = -2/5 : -27/25: -5/2 = - 4/27

Answer 2

a)1,25 + (-2 3/4) = 1 1/4 + (-2 3/4) = -1 2/4 = 1 1/2

b)4 5/8 - 1,125 = 4 5/8 -1 1/8= 3 4/8

c)-7,5+3 1/2=-7 1/2+3 1/2=4

d)-4,3 - 2 5/6 = -4 18/60 - 2 50/60 = 7 8/60 = 7 2/15

e)-2 1/2 - (-4,2) = -2 5/10 (-4 2/10) = -6 7/10

f)-5,04 + (-3 1/4) = -5 4/100 + (-3 25/100) = -8 29/100

g)6,06 + (-8 1/8) = 6 60/1000 + (-8 125/1000) = -2 65/1000

h)3/4 * (-5,2) = 75/100 * (-5 20/100) = -3 9/10

i)(-4 2/7) * (-3,5) = (-4 20/70) * (-3 35/70) = -7 55/70 = -7 11/14

j)-2,2 : 1 5/6 = -11/5 * 6/11 = -5/6

k)6 1/4 : (-2,5) = 25/6 * (-2/5) = 5/3 = -1 2/3

l)(-2 1/4) : (-2 4/7) = (-9/4) * (-7/18) = 7/8

m)-0,6 : (-1 2/25) : (-2 1/2) = -3/5 * (-25/27) : (-2 1/2) = 5/9 * ( -2/5) = -2/9

Liczę na naj! ;D