HSPT Math : Decimals

Study concepts, example questions & explanations for HSPT Math

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Example Questions

Example Question #862 : Hspt Mathematics

Possible Answers:

Correct answer:

Explanation:

To subtract decimals you place the first decimal over the top of the other aligned by the decimal point. If there are no numbers after a tens, hundredths, or thousandths place or further to the right of the decimal just add a zero in the required areas.

For example  becomes 

Then go through each place and subtract the top number by the bottom number. Subtract the numbers in each place like you would any number.

The example we are working with will look like this 

The answer after subtraction is 

Example Question #172 : Decimals

Subtract: 

Possible Answers:

Correct answer:

Explanation:

Rewrite the decimal as a fraction and subtract:

Reduce this:

Example Question #871 : Hspt Mathematics

Evaluate: 

Possible Answers:

Correct answer:

Explanation:

Add the first two numbers, making sure you align the decimal points in the addends and the sum:

Now subtract the third number, making sure you again align the decimal points:

Example Question #171 : Decimals

Combine: 

Possible Answers:

Correct answer:

Explanation:

First, combine the positive decimals, which gives you .

Then, you can subtract that from , but remember that your answer is negative since it's a .

Your answer is .

Example Question #1 : How To Find The Decimal Equivalent Of A Fraction

Write the value of this expression as a decimal:

Possible Answers:

Correct answer:

Explanation:

Simplify the sum by taking the least common denominator, which is 12:

Divide 13 by 12:

Example Question #1 : How To Add Decimals

Simplify the following:

Possible Answers:

Correct answer:

Explanation:

To add decimals, first add zeros to the necessary terms so they all have the same number of places to the right of the decimal point.

Now, temporarily drop the decimal and add the numbers as if they were whole numbers.

Finally, add the decimal place back in, in the same place you removed it from. In this case, we originally modified our numbers so they all had 3 numbers to the right of the decimal, so we will add the decimal back to the exact same place. Thus, our answer is:

 

Example Question #1 : How To Add Decimals

Add:  

Possible Answers:

Correct answer:

Explanation:

Rewrite the problem so that the tenths, hundredths, and thousandths digits align. Use zeros as placeholders and solve.

Example Question #281 : Arithmetic

Which of the following is the sum of nine tenths and nineteen thousandths?

Possible Answers:

The correct response is not given in the other choices.

Correct answer:

Explanation:

Nine tenths is equal to 0.9; nineteen thousandths is equal to 0.019. Add them, rewriting 0.9 as 0.900:

     

     

Example Question #281 : Arithmetic

Add:  

Possible Answers:

Correct answer:

Explanation:

Ensure that each digit is added to the correct digit.

Add three zeros at the end of  as placeholders.

Add the tenths place with the tenths place (in this case ), hundredth place with the hundredth place (in this case )  , thousandth place with thousandth place (in this case ), and ten thousandth place with ten thousandth place (in this acase )

Example Question #177 : Decimals

Add 

Possible Answers:

Correct answer:

Explanation:

Add the placeholder for the hundredths place after .

Rewrite the problem:

Add the hundredths place.

Add the tenths place.

Combine the numbers.

The decimal place is two places from the right.

The correct answer is:  

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