# Question Video: Filling in a Table by Evaluating a Product Mathematics • 3rd Grade

Complete the missing data in the following table.

01:35

### Video Transcript

Complete the missing data in the following table.

In this question, we’re shown a table. And we’re told that some of the information is missing. This is a multiplication table. We have to multiply the numbers on the top row by 10 and write the answer in the bottom row. Seven multiplied by 10 is 70. We have to find eight times 10. And the row that comes after eight times 10 is nine times 10, which is 90.

We could use these multiplication facts to help us find the missing number. In other words, we could use the fact that seven times 10 is 70 to help us find eight times 10. We could also use the fact that nine times 10 is 90 to help us find eight times 10. If we add 10 to 70, we’ll have eight 10s instead of seven. And we know that 70 plus 10 is 80. 90 take away 10 is also 80. Nine 10s are 90, so eight 10s are one less 10 than 90. 90 take away 10 is 80.

The missing number in the table is 80. We found the answer using the facts we were already given. Eight times 10 equals 80.