real world decimal problems with addition and subtraction

Answer 1

Here are some real-world decimal problems involving addition and subtraction:

Problem 1: Shopping Budget

Jessica has a budget of $150 for groceries. She spends $34.75 on fruits, $22.40 on vegetables, and $18.99 on dairy products. How much money does she have left after her grocery shopping?

Solution:

1. Calculate the total spent.

   • Total spent = $34.75 + $22.40 + $18.99
   • Total spent = $76.14

2. Subtract the total spent from the budget.

   • Amount left = $150 - $76.14
   • Amount left = $73.86

Problem 2: Fuel Costs

Mark drove his car for a road trip and spent $58.45 on gas on the way there and $72.30 on the way back. How much did he spend in total on gas?

Solution:

1. Add the gas expenses.
   • Total gas cost = $58.45 + $72.30
   • Total gas cost = $130.75

Problem 3: Temperature Changes

In a city, the temperature was recorded at 23.4 degrees Celsius in the morning and dropped to 15.6 degrees Celsius by evening. How much did the temperature decrease?

Solution:

1. Subtract the evening temperature from the morning temperature.
   • Temperature decrease = 23.4 - 15.6
   • Temperature decrease = 7.8 degrees Celsius

Problem 4: Monthly Expenses

Emily keeps track of her monthly expenses. This month, she spent $120.50 on rent, $45.75 on utilities, and $30.60 on groceries. How much did she spend in total this month?

Solution:

1. Add the expenses.
   • Total expenses = $120.50 + $45.75 + $30.60
   • Total expenses = $196.85

Problem 5: Bank Account Balance

Tom had $250.50 in his bank account. He deposited $150.75 and then withdrew $89.20. What is his current balance?

Solution:

1. First, add the deposit to the initial balance.

   • New balance after deposit = $250.50 + $150.75
   • New balance = $401.25

2. Then subtract the withdrawal.

   • Current balance = $401.25 - $89.20
   • Current balance = $312.05

These problems illustrate practical applications of addition and subtraction with decimals in everyday situations!