Question Video: Finding the Missing Factor given a Product of Three One-Digit Numbers | Nagwa Question Video: Finding the Missing Factor given a Product of Three One-Digit Numbers | Nagwa

Question Video: Finding the Missing Factor given a Product of Three One-Digit Numbers Mathematics • Third Year of Primary School

Fill in the blank with the missing factor: 2 × (_ × 3) = 18.

02:07

Video Transcript

Fill in the blank with the missing factor: Two times what times three equals 18.

In this question, we have to find the missing factor. This part of our expression is inside a pair of brackets. This tells us that we need to multiply these two factors together first. So something multiplied by three and then multiplied by two equals 18. Two multiplied by what equals 18. We know that two times nine is 18. So what do we need to multiply by three to give us nine? Three times three is nine. So two times three times three equals 18. Three times three is nine; two times nine is 18. The missing factor is three.

Another way we could’ve found the missing factor is to start with the numbers we already had. Two times three times what equals 18. First, we can multiply two by three, which is six. Then all we need to think about is what do we time six by to give us a product of 18. And we know that six times three is 18. It doesn’t matter how we group the factors or the order in which we multiply them; the product doesn’t change. Two times three times three equals 18. Two times three times three equals 18. And three times three times two equals 18. The missing factor is three.

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