Video Transcript
Find the missing number. 18 is what times greater than
three.
In this question, we’re being asked
to compare two numbers, the numbers 18 and three. And we’re being asked to calculate
how many times greater 18 is than number three. When we see the words “how many
times greater,” we know this is a multiplicative comparison problem. We’re being asked to compare two
numbers using multiplication. Let’s use a bar model to help us
think about how to calculate the answer.
We’ve drawn our two bars to
represent the numbers 18 and three. To work out how many times greater
18 is than three, we could see how many threes there are in the number 18. We know that one three is three,
two threes are six, three times three is nine, four times three is 12, five times
three is 15, and six times three is 18. Three is equal to one times
three. 18 is equal to six times three. The missing number is six. 18 is six times greater than
three. We found the missing number using a
bar model and multiplication equations. 18 is six times greater than
three.
