Question Video: Subtracting Money to Find How Much Money Is Left | Nagwa Question Video: Subtracting Money to Find How Much Money Is Left | Nagwa

Question Video: Subtracting Money to Find How Much Money Is Left Mathematics • First Year of Primary School

Sherif has the 20-pound note shown. Sherif uses his 20-pound note to buy a toy. The toy costs 10 pounds. What change does Sherif get?

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Video Transcript

Sherif has the 20-pound note shown. Sherif uses his 20-pound note to buy a toy. The toy costs 10 pounds. What change does Sherif get?

This is a word problem. We know that Sherif has 20 pounds. And he uses his money to buy a toy aeroplane. If the toy cost him 10 pounds, how much change will he get? We could use a part–whole model to help us solve the problem. We know that Sherif has 20 pounds to begin with. And he bought a toy which cost him 10 pounds. How much money does he have left?

One way that we could solve the problem is to subtract 10 from 20. That will tell us how much money he has left. Another way to solve the problem is to think about which number we add to 10 to make 20. 10 and 10 are a pair which make 20. 20 take away 10 is 10. If Sherif has 20 pounds and he spends 10 pounds on a toy, he will have 10 pounds left because 20 subtract 10 equals 10.

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