Isabella had 30 flowers to put into
vases. She found the number of vases she
needed by solving 30 divided by 10. How many flowers did she put in
each vase? And how many vases did she
This problem gets us to think about
the calculation that Isabella uses to find out the number of vases she needs. She works out 30 divided by 10. What is each of the numbers in this
calculation mean? What does the 30 represent? What does the 10 represent? And what is the answer?
We know that the first number 30 is
the total number of flowers that Isabella has. This is the amount that’s being
split up in the division. We’re told that she uses a division
to find the number of vases she needs.
And so the unknown answer to the
division is the number of vases. This means we know that the number
10 in the division is the number of flowers in each vase. It’s like saying 30 split into
groups of 10, how many groups? 30 flowers split into vases that
contain 10, how many vases?
So our first question asks “How
many flowers did she put in each vase?” We’ve answered this already. 30 flowers were split into groups
of 10. There were 10 flowers in each
And so our second question asks
“How many vases did she need?” In other words, what is the answer
to the division. We can use our knowledge of
multiplication facts to help us here. How many tens make 30? How many vases with 10 flowers in
each will make 30 flowers? Three multiplied by 10 equals
30. So we can say 30 divided by 10
30 flowers split into groups of 10
equals three groups. Isabella needed three vases.