Question

zad. 24

Wykonaj odejmowanie:

a) 0,5 - 1/3 =

b) 5/6 - 0,125 =

c) 0,8 - 2/5 =

d) 1,5 - 7/8 =

e) 18,2 - 1/4 =

f) 2 i 2/7 - 0,6 =

g) 4 i 5/9 -3,75 =

h) 12,05 - 3 i 1/8 =

i) 4,7 - 1 i 5/6 =

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Answer 1

a) 0,5 - 1/3 = 1/2 - 1/3 = 3/6 - 2/6 = 1/6

b) 5/6 - 0,125 = 5/6 - 1/8 = 20/24 - 3/24 = 17/24

c) 0,8 - 2/5 = 8/10 - 4/10 = 4/10 = 2/5

d) 1,5 - 7/8 = 15/10 - 7/8 = 120/80 - 70/80 = 50/80

e) 18,2 - 1/4 = 18,2 - 0.25 = 17.95

f) 2 i 2/7 - 0,6 = 2 i 2/7 - 6/10 = 16/7 - 6/10 = 160/70 - 42/70 = 118/70 = 1 i 48/70 = 1 i 24/35

g) 4 i 5/9 -3,75 = 4 i 5/9 - 3 i 3/4 = 41/9 - 15/4 = 164/36 - 135/36 = 29/36

h) 12,05 - 3 i 1/8 = 12.05 - 3.125 = 8.925

i) 4,7 - 1 i 5/6 = 4 i 7/10 - 1 i 5/6 = 47/10 - 11/6 = 282/60 - 110/60 = 172/60 = 2 i 52/60 = 2 i 26/30

Answer 2

a) 0,5 - 1/3 =5/10-1/3=15/30-10/30=5/30=1/6

b) 5/6 - 0,125 =5/6-125/1000=5000/6000-750/6000=4250/6000=17/24

c) 0,8 - 2/5 =0,8-0,4=0,4

d) 1,5 - 7/8 =15/10-7/8=120/80-70/80=50/80=5/8

e) 18,2 - 1/4 =18,2-0,25=17,95

f) 2 i 2/7 - 0,6 =16/7-6/10=160/70-42/70=118/70=1 i 48/70=1i 24/35

g) 4 i 5/9 -3,75 =41/9-375/100=4100/900-3375/900=725/900=145/180=29/36

h) 12,05 - 3 i 1/8 =1205/100-25/8=9640/800-2500/800=7140/800=8 i 740/800=185/200=37/40

i) 4,7 - 1 i 5/6 =47/10-11/6=282/60-110/60=172/60=2 i 52/60=13/15

Answer 3

a)0,5-1/3=1/2-1/3=3/6-2/6=1/6

b)5/6-0,125=5/6-1/8=20/24-3/24=17/24

c) 0,8 - 2/5 =8/10-4/10=4/10=2/5

d) 1,5 - 7/8 =1,5-0,875=0,625=5/8

e) 18,2 - 1/4 =18,2-0,25=17,95

f) 2 i 2/7 - 0,6 =2 i 2/7-6/10=2i20/70-42/70=1i90/70-42/70=1i48/70

g) 4 i 5/9 -3,75 =4i5/9-3i3/4=4i20/36-3i21/36=35/36

h) 12,05 - 3 i 1/8 =12,05-3,125=8,925

i) 4,7 - 1 i 5/6 =4i7/10-1i5/6=4i42/60-1i50/60=2i52/60