Adding mixed numbers with like denominators | Fractions | Pre-Algebra | Khan Academy

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

Missed the previous lesson?
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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Sommiamo questi
due numeri misti,

2 e 5 tredicesimi più
7 e 6 tredicesimi.

E il modo in cui
mi piace pensarlo

è separare i numeri misti nella
loro parte intera e nella frazione.

Così possiamo riscrivere
2 e 5/13 come

2 più 5 su 13

e poi possiamo
scrivere questo +,

e poi 7 e 6/13 possiamo
riscriverlo come

più 7 più 6/13.

Ho solo riscritto questo

e ho spezzato i numeri misti nella
loro parte intera e nella frazione.

E poi voglio sommare
le parti intere.

2 più 7, faccio 2 più 7 qui...

Li sommo, e a questo sommo
le parti frazionarie,

quindi aggiungo 5/13 + 6/13.

Se sommiamo le parti intere

2 + 7 è 9

e le parti frazionarie, che già
hanno lo stesso denominatore,

5/13 + 6/13,
stesso denominatore,

ottieni 11/13, perché
5 + 6 è 11.

Quindi ottieni
9 + 11/13.

Questo è la stessa cosa
di 9 e 11/13

e abbiamo finito!