Lesson 5 Concept Development
Problem 1: Division as fair-share, the unknown as the number of groups.
I am having a party. 18 people are coming. I know that 6 people can sit at each table, but I'm not sure how many tables I'll need.
Problem 2: Relate finding the number of groups to counting by the divisor.
I bought 15 glue sticks. 3 glue sticks come in each pack. How many packs did I buy to get a total of 15?
Problem: Emma is drawing horses. She draws 4 legs on each horse, and a total of 24 legs.
a. Use a count-by to find the number of horses Emma draws. Make a drawing to match your counting.
b. Write a division sentence to represent the problem.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
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