Converting decimals to percents example 2 | Decimals | Pre-Algebra | Khan Academy
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0:01 - 0:06Kunnen we 1,501 schrijven als een percentage?
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0:06 - 0:11Dus als iets per 100.
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0:11 - 0:161,501 is hetzelfde als 1,501 gedeeld door of per 1.
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0:16 - 0:22Laten we nu teller en noemer vermenigvuldigen met 100
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0:22 - 0:25Dan veranderen we niets aan de waarde,
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0:25 - 0:27het is vermenigvuldigen met 1.
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0:27 - 0:30We krijgen dan hetzelfde, maar anders geschreven.
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0:30 - 0:35De noemer wordt 100 keer 1, simpel.
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0:35 - 0:37Dat is gewoon 100.
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0:37 - 0:42En de teller: 1,501 keer 100.
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0:42 - 0:44dat is
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0:44 - 0:46als we met 10 vermenigvuldigen,
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0:46 - 0:47schuift de komma een naar rechts,
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0:47 - 0:49maar we moeten met 100 vermenigvuldigen,
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0:49 - 0:50dus nog een keer met 10.
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0:50 - 0:53Dus schuift de komma 2 plaatsen op.
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0:53 - 0:56We vermenigvuldigen twee keer met 10.
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0:56 - 0:58Dus in feite met 100.
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0:58 - 0:59Dit is vermenigvuldigen met 10,
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0:59 - 1:00en dit is vermenigvuldigen met 100,
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1:00 - 1:02Dus hier komt de komma nu.
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1:02 - 1:06Dus we krijgen 150,1
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1:06 - 1:12Dus we hebben 150,1 per 100,
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1:12 - 1:15150,1 per 100.
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1:15 - 1:21Ik schrijf dat op, 150,1 per ... per 100
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1:21 - 1:26Dat is hetzelfde als 150,1 procent
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1:26 - 1:33ofwel 150,1%
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1:33 - 1:34Klaar.
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1:34 - 1:36Wat we eigenlijk doen
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1:36 - 1:37- als je het heel simpel houdt -
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1:37 - 1:41is met 100 vermengivuldigen
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1:41 - 1:44en dan zeggen dat het een percentage is.
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1:44 - 1:47Dus je moet wel het % symbool erbij zetten!
- Title:
- Converting decimals to percents example 2 | Decimals | Pre-Algebra | Khan Academy
- Description:
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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=PreAlgebraPre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!
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Fran Ontanaya edited Dutch subtitles for Converting decimals to percents example 2 | Decimals | Pre-Algebra | Khan Academy | ||
Fran Ontanaya edited Dutch subtitles for Converting decimals to percents example 2 | Decimals | Pre-Algebra | Khan Academy |