Common Core: 7th Grade Math : Subtract Rational Numbers and Understand The Absolute Value of Their Difference: CCSS.Math.Content.7.NS.A.1c

Study concepts, example questions & explanations for Common Core: 7th Grade Math

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Example Question #1 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Solve:

Possible Answers:

Correct answer:

Explanation:

The problem indicates that the result is  units more negative than , which is .

Example Question #2 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Possible Answers:

Correct answer:

Explanation:

When we subtract a negative number, the sign turns positive. It becomes an addition problem. .

Example Question #3 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Solve:

Possible Answers:

Correct answer:

Explanation:

Remember that subtracting a negative number is just like adding the positive of that number, because you move to the right (more positive) on the number line. Therefore

 

 

Example Question #4 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Subtract:  

Possible Answers:

 

Correct answer:

 

Explanation:

Distribute the negative sign through the parentheses.  Double negatives equal a positive.

The answer is .

Example Question #4 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Possible Answers:

Correct answer:

Explanation:

When minus signs meet, the sign becomes positive. This becomes an addition problem. Answer is .

Example Question #5 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Possible Answers:

Correct answer:

Explanation:

When two minus signs meet, the sign becomes positive. Since  is greater than  and is negative, our answer is negative. We treat as a subtraction problem. Answer is .

Example Question #6 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Possible Answers:

Correct answer:

Explanation:

Two minus signs become a plus sign. It's now an addition problem.

Add the ones digits together: 

Add the tens digits together: 

Combine the ones and tens digit to get final answer.

Answer is .

Example Question #7 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Possible Answers:

Correct answer:

Explanation:

Two minus signs become a plus sign. It's now an addition problem. Since  is greater than  and is negative, our answer is negative.

We treat as a normal subtraction.

Answer is 

Example Question #8 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Solve:

Possible Answers:

Correct answer:

Explanation:

Two minus signs becomes a plus sign. Since  is greater than  and is positive, our answer is positive. We treat as a normal subtraction. Answer is .

Example Question #9 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c

Solve:

Possible Answers:

Correct answer:

Explanation:

Two minus signs become a plus sign. This is just simple addition. Answer is .

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