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Money

In this article, we are going to solve word problems involving addition and subtraction of money.

  1. Finding the amount of money at first
  2. Finding the amount of money left
  3. Finding the cost of item

1. Finding the amount of money at first

Question 1:

A bag cost \($35\). After buying the bag, Melissa had \($15\) left. How much money did she have at first?

Solution:

​ A bag cost $35 . After buying the bag, Melissa had  left  ​$15

\($35 + $15 = $50\)

She had \($50\) at first.

Answer: 

\($50\)

 

Question 2:

The cost of a hairdryer is \($44.95\). After buying the hairdryer, Mrs Kumar had \($16.40\) left. How much money did she have at first?

Solution:

To find the amount of money Mrs Kumar had at first, we need to add the cost of the hairdryer and the amount of money left. Remember to align the decimals.

cost of a hairdryer is $44.95 . After buying the hairdryer, Mrs Kumar had $16.40 left  ​

\($44.95 + $16.40 = $61.35\)

She had \($61.35\) at first.

Answer:

\($61.35\)

 

Question 3:

After buying \(2\) basketballs that cost \($28.80\) each, Michael had \($7.40\) left. How much money did he have at first?

Solution:

​ After buying 2  basketballs that cost $28.80 each, Michael had $7.40 left  ​

\(\begin{align} $28.80+$28.80 &= $57.60\\[2ex] $57.60 + $7.40 &= $65.00 \end{align}\)

He had \($65\) at first.

Answer: 

\($65\)

 

Question 4:

After paying \($98\) for a bird and \($25.50\) for a bird cage, Mr Lim had \($49\) left. How much money did he have at first?

Solution:

​ After paying $98 for a bird and $25.50 for a bird cage, Mr Lim had $49 left  ​

\(\begin{align}   $98.00 + $25.50 &= $123.50\\[2ex] $123.50 + $49.00 &= $172.50 \end{align}\)

He had \($172.50\) at first.

Answer:

\($172.50\)

 

Question 5:

Joyce bought a doll and a board game. The board game cost \($19.70\). The doll cost \($22.50\) more than the board game. She gave the cashier some money and received \($4.30\) change. How much did she give the cashier?

Solution:

Board game cost $19.70. The doll cost $22.50 more than the board game. She gave the cashier some money and received $4.30 change  ​

Cost of the doll\(\begin{align}\\ &= $19.70 + $22.50\\ &= $42.20 \end{align}\)
Total cost of the doll and the board game\(\begin{align}\\ &= $19.70 + $42.20\\ &= $61.90 \end{align}\)
    Amount of money she gave the cashier\(\begin{align}\\ &= $61.90 + $4.30\\ &= $66.20 \end{align}\)

She gave the cashier \($66.20\).

Answer:

\($66.20\)

 

Question 6:

Ryan bought a pair of shoes for \($79.80\) and a set of toiletries which cost \($63.30\) less than the pair of shoes. After paying the cashier, he received \($3.70\) change. How much did he give the cashier?

Solution:

Ryan bought a pair of shoes for $79.80 and a set of toiletries which cost $63.30 less than the pair of shoes. After paying the cashier, he received $3.70 change

Cost of the toiletries\(\begin{align}\\ &= $79.80 - $63.30\\ &= $16.50 \end{align}\)
Total cost of the shoes and the toiletries\(\begin{align}\\ &= $79.80 + $16.50\\ &= $96.30 \end{align}\)
Amount of money he gave the cashier\(\begin{align}\\ &= $96.30 + $3.70\\ &= $100.00 \end{align} \)

He gave the cashier \($100\).

Answer:

\($100\)

 

2. Finding the amount of money left/change received

Question 1:

Melissa had \($50\). She bought a bag for \($30\). How much money did she have left?

Solution:

​ Melissa had $50. She bought a bag for $30

\($50 - $30 = $20\)

She had \($20\) left.

Answer:

\($20\)

 

Question 2:

Mr Tan bought a television set for \($699\). He gave the cashier \($1000\). How much change should he receive?

Solution:

​ Mr Tan bought a television set for $699. He gave the cashier $1000

\($1000 - $699 = $301\)

He should receive \($301\) change.

Answer:

\($301\)

 

Question 3:

Victor bought \(2\) watches that cost \($101.95\) each. He paid the cashier \($250\). How much change should he receive?

Solution:

Victor bought 2 watches that cost $101.95 each. He paid the cashier $250.  ​

Cost of 2 watches\(\begin{align}\\ &= $101.95 + $101.95 \\ &= $203.90 \end{align}\)
                  Change\(\begin{align}\\ &= $250.00 - $203.90\\ &= $46.10 \end{align}\)

He should receive \($46.10\) change.

Answer:

\($46.10\)

 

Question 4:

Zoe bought a pair of shoes for \($95.80\) and a pair of socks for \($4.90\). She paid the cashier \($110\). How much change should she receive?

Solution:

Zoe bought a pair of shoes for $95.80 and a pair of socks for $4.90. She paid the cashier $110

Total cost of the shoes and the socks\(\begin{align}\\ &= $95.80 + $4.90\\ &= $100.70 \end{align}\)
                                              Change\(\begin{align}\\ &= $110.00 - $100.70\\ &= $9.30 \end{align}\)

She should receive \($9.30\) change.

Answer:

\($9.30\)

 

Question 5:

Jeremy had \($300\). He paid \($250\) for his son’s tuition fees and \($28.50\) for material fees. How much money did he have left?

Solution:

Jeremy had $300. He paid $250 for his son’s tuition fees and $28.50 for material fees  ​

Amount of money spent\(\begin{align}\\ &= $250.00 + $28.50\\ &= $278.50 \end{align}\)
    Amount of money left\(\begin{align}\\ &= $300.00 - $278.50\\ &= $21.50 \end{align}\)

He had \($21.50\) left.

Answer:

\($21.50\)

 

3. Finding the cost of an item

Question 1:

Melissa bought a bag. She gave the cashier \($100\) and received a \($40\) change. How much did the bag cost?

Solution:

​ Melissa bought a bag. She gave the cashier $100 and received a $40 change  ​

\($100 - $40 = $60\)

The bag cost \($60\).

Answer:

\($60\)

 

Question 2:

Tom bought a T-shirt at a shop. He paid the cashier \($40\) and received a change of \($16.25\). How much did the T-shirt cost?

Solution:

​ Tom bought a T-shirt at a shop. He paid the cashier $40 and received a change of  ​$16.25

\($40.00 - $16.25 = $23.75\)

The T-shirt cost \($23.75\). 

Answer:

\($23.75\)

 

Question 3:

Mark bought a notebook at a shop. He paid the cashier \($50\) and received a change of \($18.45\). How much did the notebook cost?

Solution:

Mark bought a notebook at a shop. He paid the cashier $50 and received a change of ​ $18.45.

\($50.00 - $18.45 = $31.55\)

The notebook cost \($31.55\).

Answer:

\($31.55\)

 

Question 4:

Mrs Chan went to Ubi supermarket and bought some items. She paid the cashier \($50\) and received a change of \($34.35\). However, she accidentally tore the receipt as shown. How much did the grapes cost?

​ Mrs Chan paid the cashier $50 and received a change of ​$34.35

Solution:

                                     Amount of money spent\(\begin{align}\\ &= $50 - $34.35\\ &= $15.65 \end{align} \)
The total cost of orange juice, butter and bread\(\begin{align}\\ &= $6.80 + $4.30 + $1.35\\ &= $12.45 \end{align}\)
                                            Cost of the grapes\(\begin{align}\\ &= $15.65 - $12.45\\ &= $3.20 \end{align}\)

The grapes cost \($3.20\).

Answer:

\($3.20\)

 

Question 5:

Kim went shopping and bought some items. She paid the cashier \($100\) and received a change of \($13.50\). She accidentally tore the receipt as shown. How much did the dress cost?

​ Kim paid the cashier $100 and received a change of $13.50

Solution:

                                                Amount spent\(\begin{align}\\ &= $100 - $13.50\\ &= $86.50 \end{align}\)
The total cost of the necklace and the shoes\(\begin{align}\\ &= $12.80 + $34.20\\ &= $47.00 \end{align}\)
                                          Cost of the dress\(\begin{align}\\ &= $86.50 - $47.00\\ &= $39.50 \end{align}\)

The dress cost \($39.50\).

Answer:

\($39.50\)

 

Continue Learning
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