Video Transcript
Fill in the blank: 207 plus 500
equals what.
In this question, we’ve got two
numbers to add together. Now they’re both three-digit
numbers. But if we look carefully at our
second three-digit number, we can see that it’s a little bit of an easier number to
add. This is because although it
contains a number of hundreds, five 100s, it doesn’t contain any tens or ones. It’s what we call a multiple of
100. And because it’s made up of five
100s, we can count in five 100s to find the answer. Let’s start with the number
207. And let’s count on it hundreds five
times.
And we’ll find out which number we
say is the last number. So we’ll start with 207 and then
307, 407, 507, 607, 707. We know that the number 500 is made
up of five 100s but no tens and no ones. So that’s why as we read each
number, they always ended in seven. 207 becomes 307, 407, 507, and so
on. We counted on five 100s from
207. And the last number we said was the
answer. 207 plus 500 equals 707.
