Question Video: Interpreting Products of Whole Numbers by Grouping Mathematics • 3rd Grade

Which picture shows 4 groups of 3? Which expression means 4 groups of 3? [A] 4 × 3 [B] 4 + 4 + 4 [C] 4 + 3 [D] 4 + 3 + 3 + 3

03:09

Video Transcript

Which picture shows four groups of three? Which expression means four groups of three?

We’re shown two different pictures. We have to pick the one which shows four groups of three. Let’s look at the first picture. How many groups does it show? One, two, three. Three groups of what? How many are in each group? Let’s count. One, two, three, four. The first picture shows three groups of four. The second picture shows one, two, three, four groups of one, two, three.

So, the second picture shows a four groups of three. This is the correct picture. It shows four groups of three.

In the second part of the question, we’re given four different expressions. We have to pick the one which means four groups of three. We know there are four groups of three. Is there a symbol we could use to say groups of? We could use the multiplication sign. Four groups of three is the same as four multiplied by three. We could also use repeated addition. To show four groups of three, we would need four threes. And we would need to add these four threes together. So, which of the four expressions means four groups of three? Is it four times three, four plus four plus four, four plus three, or four plus three plus three plus three?

The first expression is four times three. Four times three means four groups of three. Four plus four plus four is three groups of four or three lots of four. Four plus three is seven. So, that can’t be the correct expression. And four plus three plus three plus three is one four and three threes. So, that’s not the correct expression, either.

The expression which means four groups of three is four multiplied by three.

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