Video Transcript
Which of the following represents
50 piastres?
In this question, we’re shown four
different groups of coins. We have to find the total value of
each group of coins and select the group which represents 50 piastres. Let’s add together the value of the
two coins in the first group. We could use this part–whole model
to help. If the total amount of piastres
we’re trying to make is 50 and our first coin is worth 50 piastres, it can’t be this
group of coins because our second coin is worth 25 piastres. 50 plus 25 gives us more than
50. 50 and 25 is 75.
It can’t be this group of coins
either because 50 plus 25 plus 25 is greater than 50. We can’t use two 50-piastre coins
to make 50 piastres because double 50 is 100. So it must be our final group of
coins. There are two 25-piastre coins. 25 doubled or 25 plus 25 does equal
50. This is the group of coins which
represents 50 piastres. 25 plus 25 equals 50.
