Video: Identifying Missing Values in Additions Represented in Words and Numerals

Complete the following: Two hundreds + ＿ hundreds = five hundreds, 200 + ＿ = ＿.

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Video Transcript

Complete the following, two hundreds plus what hundreds equals five hundreds. 200 plus what equals what.

If we look carefully at this problem, we can see that we’ve got two additions written in different ways. The first calculation uses words, two hundreds plus what hundreds equals five hundreds. And although we have two empty spaces in our second calculation, we can see that we’re using numerals, 200 plus what equals what? Let’s look at the first addition to begin with.

Our addition begins with two hundreds. On a place value grid, two hundreds look like this. Now, what do we add to two hundreds to give us five hundreds? Let’s count on from two until we reach five, two, three, four, five. We’ve added three more hundreds. Two hundreds plus three hundreds equal five hundreds.

Now, let’s perform the same addition, this time we’re going to represent it using numerals. 200 plus one, two, 300 equals 500. We’ve represented the same calculation in two different ways. Two hundreds plus three hundreds equals five hundreds. 200 plus 300 equals 500. The missing word and numbers are three, 300 and 500.