Video Transcript
A girl had 46 pounds. She bought a dress for 34
pounds. How much does she have left?
This is a word problem. We know the girl had 46 pounds and
she spent 34 pounds on a dress. We have to calculate how much money
she has left. We can sketch a bar model to help
us think about how to solve the problem. We know the girl had 46 pounds to
begin with. And she spent 34 pounds on a
dress. So to find out how much money she
has left, we have to find the difference between 46 and 34.
We have to subtract 34 from 46. We could use the standard written
method or column subtraction to help us find the difference. 46 has six ones. 34 has four ones. We need to work out six take away
four. Six take away four is two. Now we can subtract in the tens
place. 46 has four 10s. 34 has three 10s. So we need to calculate four 10s
take away three 10s. Four take away three is one, so
we’ve got one 10 left. 46 take away 34 equals 12. If a girl has 46 pounds and she
buys a dress for 34 pounds, she will have 12 pounds left because 46 take away 34
equals 12.
