Relate multiplication and division and understand that division can represent situations of unknown group size or an unknown number of groups.
Presley has 10 markers. Her teacher gives her 2 boxes and asks her to put an equal number of markers in each box.
Anthony has 10 markers. His teacher wants him to put 2 markers in each box until he is out of markers.
a. Before you figure out what the students should do, write a multiplication sentence to correspond with each context above.
b. Solve each problem for the missing factor.
Suppose that there are 4 tanks and 3 fish in each tank, as shown in the picture below. The total number of fish in this situation can be expressed as 4 x 3 = 12.
a. Describe what is meant in this situation by 12 $$\div$$ 3 = 4.
b. Describe what is meant in this situation by 12 $$\div$$ 4 = 3.
Write a multiplication equation and a division equation to represent each of the following situations.
a. Ross has 15 flowers that he wants to make into flower arrangements. Each flower arrangement will use 5 flowers. How many flower arrangements can he make?
b. Heidi has 8 apps that she wants to place into rows of 4. How many apps will there be in each row?