# Question Video: Solving Word Problems Involving Subtraction of Numbers up to 99

Oliver has a 50-pound note and a 20-pound note. He is going to buy three toys. The first is 12 pounds, the second is 20 pounds, and the third is 15 pounds. How much money will he have left?

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### Video Transcript

Oliver has a 50-pound note and a 20-pound note. He is going to buy three toys. The first is 12 pounds, the second is 20 pounds, and the third is 15 pounds. How much money will he have left?

This is a three-step problem. First, we need to work out how much money Oliver has to begin with. Then, we need to work out the cost of the three toys that Oliver bought. Then, we need to calculate how much money he will have left.

First, let’s calculate how much money Oliver has to start with. He has a 50-pound note and a 20-pound note. 50 plus 20 is 70. So, we know that Oliver begins with 70 pounds. We know that Oliver buys three toys. The first cost 12 pounds. The second cost 20 pounds. And the third toy cost 15 pounds. We need to add these three amounts together. Two plus five is seven. One plus two is three plus one more makes four. So, Oliver had 70 pounds and he spent 47 pounds on his three toys.

To find out how much money Oliver will have left, we need to find the difference between 70 pounds and 47 pounds. 47 plus three equals 50. And the difference between 50 and 70 is 20. 20 and three is 23. So, the difference between 70 and 47 is 23.

If Oliver has a 50-pound note and a 20-pound note, he will have 70 pounds. If he spends 12 pounds, 20 pounds, and 15 pounds on three toys, he will have spent 47 pounds. The difference between 70 and 47 is 23. So, Oliver will have 23 pounds left.