Question

zad 10 pomocy prosze ludzie

Answer 1

Odpowiedź:

a)

11 + (-12) + 39 + 9 - 8 = 11 - 12 + 39 + 1 = -1 + 40 = 39

b)

45 + (-9) + (-91) + 5 = 45 - 9 - 91 + 5 = 50 - 100 = -50

c)

-4 1/2 + 1/6 + (-1/2) + 1 1/3 = -5 + 1/6 + 1 2/6 = -5 - 1 3/6 = -5 - 1 1/2 = -6 1/2

d)

6,25 + (-1/4) + (-3/5) + 0,75 = 7 - 5/20 - 12/20 = 7 - 17/20 = 6 3/20

e)

4/7 + (-3/14) + 1/14 = 8/14 - 2/14 = 6/14 = 3/7

f)

1/2 + (-3/4) + (-5/8) = 4/8 - 6/8 - 5/8 = 4/8 - 11/8 = 7/8

g)

5 2/3 + (-3 4/5) + 1/3 + (-1/5) = 5 2/3 + 1/3 - 3 4/5 - 1/5 = 6 - 4 = 2

h)

16 4/5 + (-4,8) + 3 1/5 + (-4 1/5) = 20 - 4,8 - 4,2 = 20 - 9 = 11

Szczegółowe wyjaśnienie: