Oblicz ile to : a)centymetrów-10% z 1 kilometra? b)centymetrów-40% z 80 metrów? c)milimetrów-20% z 30 centymetrów?
a) 1km=1000m=100000cm
100000-100%
x-10%
100x=100000*10
100x=1000000/:100
x=10000cm
9*x
9*10000=90000
b)80m=8000cm
8000cm-100%
100x=8000*10
100x= 80000/:100
x=800
6*x
6*800=4800
c)30cm=300mm
300-100%
100x=300*10
100x=3000/:100
x=30
x*8
8*30=240mm
licze na naj!
1km=1000m=100000cm
80m=8000cm
)30cm=300mm
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) 1km=1000m=100000cm
100000-100%
x-10%
100x=100000*10
100x=1000000/:100
x=10000cm
9*x
9*10000=90000
b)80m=8000cm
8000cm-100%
x-10%
100x=8000*10
100x= 80000/:100
x=800
6*x
6*800=4800
c)30cm=300mm
300-100%
x-10%
100x=300*10
100x=3000/:100
x=30
x*8
8*30=240mm
licze na naj!
1km=1000m=100000cm
100000-100%
x-10%
100x=100000*10
100x=1000000/:100
x=10000cm
9*x
9*10000=90000
80m=8000cm
8000cm-100%
x-10%
100x=8000*10
100x= 80000/:100
x=800
6*x
6*800=4800
)30cm=300mm
300-100%
x-10%
100x=300*10
100x=3000/:100
x=30
x*8
8*30=240mm