SAT Math : Decimals
Study concepts, example questions & explanations for SAT Math
All SAT Math Resources
Example Questions
Example Question #4 : Decimal Operations
If the cost of 20 equally priced pencils cost $5.80, then at the same rate what is the greatest number of pencils you can purchase for $50?
150
173
172.41
172
200
172
Remeber for this problem that you cannot spend more than $50. First find the price of each pencil by 5.80/20 = 29 cents. And then use this to do 50/0.29 = 172.41. So the greatest number of pencils you can purchase for $50 is 172 pencils.
Example Question #81 : Decimals
Charlie has charges on his credit card of $63.70, $37.32, and $81.78. If he pays down half his bill at once, and then pays the rest in four equal monthly installments, how much is each monthly installment?
Adding all the charges together and dividing by 2 yields $91.40. Dividing this by 4 yields a monthly installment of $22.85.
Example Question #6 : Decimal Operations
Simplify:
Multiply both the numerator and denominator by some power of 10 to get rid of the decimals; in this case, multiply both by 10,000.
Example Question #1 : How To Order Decimals From Least To Greatest Or From Greatest To Least
Order the following decimals in order from least to greatest:
2.1, 6.9, 4.8, 5.2, 8.5
2.1, 4.8, 5.2, 6.9, 8.5
8.5, 6.9, 5.2, 4.8, 2.1
2.1, 5.2, 8.5, 4.8, 6.9
6.9, 4.8, 8.5, 5.2, 2.1
2.1, 4.8, 5.2, 6.9, 8.5
Look at the ones place first, ignoring the decimal. The order from greatest to least is 2, 4, 5, 6, and 8. Because none of the numbers in the ones place are the same, it doesn't matter what the decimal will be on these numbers- the order will remain the same. The order is 2.1, 4.8, 5.2, 6.9, 8.5.
Example Question #36 : Decimals
In the number 5,783.2935, what is the digit in the hundredths place?
The digit in the hundredths place is the one two decimal places to the right of the decimal. That digit is 9. Do not confuse the hundredths with the hundreds place, which is three spaces to the left of the decimal.
The answer is 9.
Example Question #82 : Decimals
Which of these decimals are the greatest?
look at the first decimal place; 0.2 and 0.201 are the largest.
0.2 = 0.200 and 0.201 > 0.200
0.201 is the greatest given decimal.
Example Question #2 : How To Order Decimals From Least To Greatest Or From Greatest To Least
Which of the following is the greatest in value?
Turn the fractions into decimals to easily compare them. You can do this quickly on your calculator.
Example Question #3 : How To Order Decimals From Least To Greatest Or From Greatest To Least
Which of these decimals has the least value?
Trailing zeros at the end of a decimal do not increase or decrease the value of a given decimal. However, zeros that appear after the decimal point and precede a non-zero number decrease the value of the number.
Example Question #1 : How To Order Decimals From Least To Greatest Or From Greatest To Least
Put the following in order of least to greatest:
None of the other answers
None of the other answers
Begin by converting each fraction into a decimal:
Now we can put the decimals in order:
0.269, 0.27, 0.2788, 0.28, 0.3157
or:
No answer choice matches this order, so our answer is "None of the other answers"
Example Question #5 : How To Order Decimals From Least To Greatest Or From Greatest To Least
Order the decimals from least to greatest.
The higher negative numbers will be the least numbers.
Start with the negative numbers first.
The smaller of the two positive decimals is 
Order from least to greatest.
The answer is:
All SAT Math Resources
