Video Transcript
David bought three boxes of
pencils. Each box has 10 pencils. How many pencils does David have in
total?
In this word problem, we’re being
asked to work out the total number of pencils that David has. We know that he bought three boxes
of pencils and each box contains 10 pencils. Let’s sketch a bar model to help us
think about how to calculate the answer. Our bar model has three parts. This is because David bought three
boxes of pencils. And we know that each box has 10
pencils inside. We’ve got three lots of 10. So we can multiply 10 by three to
find the answer. We just need to count in tens three
times: 10, 20, 30. 10 times three is 30. If David bought three boxes of
pencils and each box contains 10 pencils, he will have 30 pencils in total.
