Learn how to spot a pattern in a sequence of numbers, such as 3, 6, 9, 12…

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3 + 3 = 6 + 6 = 12 + 12 = 24

3 * 2 = 6 * 2 = 12 * 2 = 24

👍

9+10=21

67+21=88 dummy

He said 3th grade instead of 3rd grade😂

you did an error Salman 67+21=88

and 88+21=109

thank you so so much khan i have a test coming up and I hope I Make it to my acis math olympics coming up

I hate this this assignment is still hard

5, 6, 8, _, 15, _

3th grade😂 it’s 3rd grade

Your first problem is incorrect 67+21… Since this is an obvious incorrect answer, and that it was officially published here on youtube; I have to question the accuracy of not only just this video, but also others published by Khan.

If this easier question has a basic error what other videos have errors that aren’t as apparent as this video. As you can see it undermines your reputation as being a reliable learning website and it’s corresponding video’s…

People make mistakes, but at least correct the mistake and upload a correct video; or acknowledge the mistake like many youtubers do with a note on the screen during the video without having to make a whole new video to ensure your credibility remains in tact.

88

9

15

18

21

109

120

yeah you made a mistake

show your face

0:52 Dyslexic mathematicians rule (!)

tanks

67+21=88