Basic Arithmetic : Basic Arithmetic
Study concepts, example questions & explanations for Basic Arithmetic
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Example Questions
Example Question #2 : Money And Time
If you lie down to take a nap at 
First, we need to convert 
and because
Now we need to add 
Thus you wake up from your nap at 
Example Question #1 : Addition And Subtraction With Time
Please choose the best answer for the question below.
If Andrew leaves his house at 
The first step in this process is to add two hours and fourteen minutes to 
Hours
Minutes:
So we know now that Andrew made it to his office at 
The hour has not changed, so we know that Andrew arrived at his desk at 
Example Question #2 : Addition And Subtraction With Time
Melissa started practicing piano at 3:34PM. She practiced until 5:17PM. How long did she practice for?
2 hours and 43 minutes
2 hours and 17 minutes
1 hour and 17 minutes
1 hour and 43 minutes
1 hour and 43 minutes
To subtract time, subtract the minutes then subtract the hours.
Since we can't have negative minutes, add 60 to the minutes and subtract 1 from the hours (60 minutes = 1 hour).
Example Question #2 : Addition And Subtraction With Time
Nate started his math, history, English, and French homework at 
First, start by adding up the total amount of time Nate spent on doing his homework.
Now, subtract 
Because we subtracted 
To figure out when he finished doing his homework, add the hours together then add the minutes together.
So then he finished at
Example Question #1 : Money And Time
Jane bought a pencil for 
Add up all the individual items.
Example Question #2 : Money And Time
Billy earned 
Billy had 
After buying the candy bar he then had 
Example Question #3 : Money And Time
John recently bought the following school supplies: a calculator for 
How much did John spend in total on school supplies?
In order to solve this problem, you must add all of the costs of school supplies together. This can be done through the following equation:
Therefore, the total amount that John spent on school supplies is 
Example Question #4 : Money And Time
Jenny has a new job at the mall. Her first paycheck was 
You must subtract the cost of the two purchases from the overall paycheck amount.
Begin by subtracting the shoe purchase from the total paycheck amount:
Then, subtract the cost of the dress:
Example Question #11 : Money And Time
Approximately how much will John need to pay if a pair of shoes cost $42.64, a pair of pants costs $37.99, and a shirt costs $21.34.
$120
$100
$80
$110
$90
$100
The key word, "approximately," indicates that we must round each of these values. Let's round to the nearest tens place because each of our answer choices is rounded to the tens place.
Shoes cost $42.64.
$42.64 rounded (down) to the nearest tens place is $40.
Pants cost $37.99.
$37.99 rounded (up) to the nearest tens place is $40.
A shirt costs $21.34.
$21.34 rounded (down) to the nearest tens place is $20.
Let's add up our estimated prices.
$40 + $40 + $20 =
$100.
Example Question #12 : Money And Time
Approximately how much will Sophie need to buy a shirt at $12.99, a loaf of bread at $3.99, and a television at $43.76?
$61
$100
$60
$80
$61
Since we're looking for an approximate value, we need to round our numbers up. Adding the three items gives a total of $60.74, so at least $61 is needed - thus $61 is the correct answer.
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