03 Word Problem (Another way for before/after)

Ahmad and Davis shared a box of sweets equally.
Ahmad ate 15 sweets and Davis ate 23 sweets.
After that, Ahmad had twice as many sweets as Davis.
How many sweets were there in the packet at first?

Another way to solve this before/after problem with MaPS. Hope that this will give you some ideas on how to “tackle” such classic problem.

Ahmad and Davis shared a box of sweets equally.
Possible questions to ask : What does “equally” mean? Do they have the same amount?

 Ahmad ate 15 sweets and Davis ate 23 sweets
Again break this statement into two part. Let’s take a look at the first part “Ahmad ate 15 sweets”.
Possible questions to ask: How do I show “ate 15”? Do I take away from the “before bar” or do I add on to the “before bar”?

Ahmad ate 15 sweets and Davis ate 23 sweets
Now for the second part”  “David ate 23 sweets”.
Possible questions to ask: How do I show “ate 23”? Do I take away from the “before bar” or do I add on to the “before bar”?

 After that, Ahmad had twice as many sweets as Davis.

This is the tricky part. Guess we must be go slower at this point
Possible questions to ask : Who has more now ? How do I show “twice as much”?

The model is now almost completed. Hopefully, the students can see the “answer”. If not, we will need to prompt them with questions like “What is the value of the yellow part?”

Leave a Reply

Your email address will not be published.