Video: Solving Word Problems Involving Multiplication

There are 2 baskets. Each basket has 11 marbles inside. How many marbles are there altogether?

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Video Transcript

There are two baskets. Each basket has 11 marbles inside. How many marbles are there altogether?

When we’re solving word problems, we always highlight the key numbers to begin with. We know there are two baskets. And each basket has 11 marbles. And the question asks us how many marbles altogether.

We can draw a quick sketch or model to help us visualize the problem or picture it in our head. So we have two baskets, each with 11 marbles inside. We could say there are two groups of 11. So now we can record our equation.

We know that groups of is the same as saying multiply. So our equation is two multiplied by 11, which is the same as 11 multiplied by two. We can calculate the answer using a place value chart to help us.

Let’s start with the biggest number 11 which has one 10 and a one. And we’re multiplying by two. Let’s start in the ones column. We have two multiplied by one. Two times one, this makes two.

Moving over into the 10ns column, we have to multiply this digit by two also. One multiplied by two equals two. There are 22 marbles altogether. We multiplied 11 by two to find the answer.

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