TACHS Math : Number Sense
Study concepts, example questions & explanations for TACHS Math
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Example Questions
Example Question #1 : Number Sense
What is the greatest common factor of 
Start by listing out the factors of 
Next, list out the factors of 
Now, find the largest factor that the two numbers share. In this case, the greatest common factor is 
Example Question #1 : Tachs: Math And Ability
What is the least common multiple of 
Start by listing out multiples of 
Next, list out multiples of 
Now, find the smallest number that is found in both lists. In this case, the least common multiple must be 
Example Question #1 : Math
Solve:
The lines on either side of the negative integer represent that we need to find its absolute value. The absolute value of a number is its real distance from zero on a number line; therefore, we need to calculate how many spaces the number is tot he left of zero on a number line. This number is a distance from zero and will not be negative. All absolute values are positive.
Therefore, the absolute value—or distance from zero—is the following:
Example Question #1 : Number Sense
Which of the following is equal to six thousand seven ten-thousandths?
"Six thousand seven ten-thousandths" in fraction form is 
Example Question #2 : Number Sense
Examine the decimal
What is the place value of the position occupied by the "6"?
Hundredths
Tenths
Ten Thousandths
Thousandths
Ten Thousandths
After the decimal point, the place values of the digits are, in order:
The "6" is in the fourth place after the decimal point, so its place value is one ten-thousandth.
Example Question #3 : Number Sense
Which of the following is equivalent to 
Recall that when a number is raised to an exponent, that means we will need to multiply the number the number of times that is equal to the exponent.
Thus, with 
Example Question #3 : Math
Solve for the missing variable in the following proportion:
Proportions are ratios that are equal to one another. We can solve for the missing variable by using cross multiplication to develop an equation.
Simplify.
Divide both sides of the equation by 
Solve.
Example Question #6 : Number Sense
Give the next number in the sequence:
To form the sequence, begin with the term 8. Each subsequent term is equal to 9 added to the previous term, as follows:
the missing term.
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