Adding subtracting mixed numbers 0.5 (ex 1)

Think of a mixed numbers as a number AND a fraction. You can add numbers....you can add fractions with like denominators. Therefore, you can add mixed numbers! Watch.

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-number-add-sub-pre-alg/e/adding_subtracting_mixed_numbers_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-number-add-sub-pre-alg/v/adding-subtracting-mixed-numbers-0-5-ex-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra

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https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-number-add-sub-pre-alg/v/subtracting-mixed-numbers-word-problem?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra

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La oss skrive om 59,2 prosent

til et desimaltall.

59,2 prosent

betyr 59,2 per 100,

som betyr per 100.

Per 100 betyr faktisk divideret med 100.

Hva får vi,

hvis vi dividerer 59,2 med 100?

59,2 divideret med 100.

Hvis vi skulle dividere med 10,

ville vi flytte kommaet

1 plass til venstre.

Så ville vi fått 5,92.

Vi skal riktignok dividere med 100.

Vi skal altså flytte kommaet

enda en plass til venstre.

Vi dividerer først med 10

og så med 10 igjen.

Hvis vi dividerer med 10 to ganger,

dividerer vi i alt med 100.

Vi skal flytte kommaet to plasser til venstre.

Det gir 0,592.

Vi skriver et 0 her,

så det er helt tydelig.

Nå er vi ferdige.

Vi har omskrevet 59,2 prosent til et desimaltall.

Vi dividerede det med 100,

som er det samme som å dividere med 10 to ganger,

så vi flyttet kommaet

2 plasser til venstre.

Når vi dividerer med 100,

flytter vi kommaet 2 plasser til venstre.

Vi får 0,592.