TACHS Math : Operations
Study concepts, example questions & explanations for TACHS Math
All TACHS Math Resources
Example Questions
Example Question #1 : Operations
Subtract.
In order to solve this problem we must subtract the second number from the first number.
Example Question #1 : Decimals
Square 0.44.
To square a number means to multiply it by itself, so we seek to compute
To multiply two decimal fractions, first multiply, ignoring the decimal points:
Move the (implied) decimal point the number of spaces right equal to the total number of digits right of the decimal points in the factors; this can be seen to be four:
The square of 0.44 is 0.1936.
Example Question #1 : Decimals
Tiffany earns 
Start by finding out how much Mark makes. Since he makes 
Mark must make 
Example Question #3 : Decimals
Rachel earns 
Cannot be determined
Start by figuring out how much Rachel can earn in each week by multiplying her hourly rate by the number of hours worked each week.
Now, divide the amount she needs to earn by the amount earned each week to find how many weeks she will need to work to earn that amount.
Rachel must work for 
Example Question #2 : Operations
Add.
In order to solve this problem we need to line up the decimal places and add.
Example Question #4 : Operations
What is the value of 
Start with finding the value of 
In order to add fractions with different denominators, we will need to change one or both denominators first. Notice that 
Now, add the two fractions together as they have the same denominator.
Next, solve 
The least common multiple of 
Thus,
Example Question #2 : Operations
Janice's car can travel 
Start by finding out how many gallons is currently in Janice's tank.
Since it is only 
The tank only has 
Example Question #3 : Operations
What is the product of 
Since the question asks for the product, you will need to multiply the two fractions. Recall that in multiplying two fractions, you will multiply the numerators together and then multiply the denominators together.
Next, reduce the fraction.
Example Question #4 : Operations
What is the difference between 
Since the question asks you to find the difference, you will need to subtract the two fractions:
Start by making both denominators the same. Multiply the numerator and denominator of 
Now, subtract.
Make sure to simplify the answer.
Example Question #3 : Fractions
Paul can type 
Cannot be determined
Start by finding out Josie's typing rate.
Since she types 
Since Josie types at 
All TACHS Math Resources
