Video Transcript
Complete the following table.
To complete the table, we can see
we’ve only got one box that we need to fill. So we just need to think about what
number it is we need to complete it with. First of all, let’s look at the
table. What can we tell about this
table? What does it show us? Well, if we don’t count the first
one because that’s where all the rows are labeled, we have four different
columns. And they’re each labeled with a
different number. Three, four, five, and six. Then again, if we ignore the first
row because that’s where the column headings are, we have four different rows. And these seem to have the same
headings as the columns, three, four, five, and six.
Now, if we look at where different
rows and columns meet, we can see that this is a multiplication grid. If we read across the row labeled
three and down the row labeled four. We reach the product of three and
four. Three times four is 12. Just a check that we are correct
about it being a multiplication grid. Let’s try another row and
column. Five multiplied by three equals
15. So now that we know what sort of a
table this is. Let’s look at where the empty
spaces.
The row that the space is in is
labeled five. And the column that the empty space
is in is also labeled five. So our missing number must be worth
five times five. What is five times five? Let’s count in fives five
times. Five, 10, 15, 20, 25. We can see that this array that
we’ve made is a square. It has the same amount of rows and
columns, five rows, five columns. Five times five is 25. And so we know our missing number
is worth 25. We worked out that the table was
actually a multiplication grid. So we needed to calculate the
answer to five times five to find the missing number. Five times five equals 25.
