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Finding the whole with a tape diagram

Use a tape diagram to find the value of the whole when given the value of a part. Created by Sal Khan.

Want to join the conversation?

• it is soo confusing
• ok it might be hard at first but keep trying.
• What job is this used in? In other words why do we need to know this? Also u are really smart
• Any job really. In basic conversations it's common to hear percentages. So it's crucial to understand percentages.
• batman solos and nobody can change my mind
• change your mind ha ha ha
• If you divide 170 by (125/100) you also get 136. Why does it also work this way?
• this doesnt help
• It might not help but that means you can do it or is it the other way around?
• i need so much help this did nothing to help
• what is a tape diagram