Pre-Algebra : One-Step Equations with Decimals

Study concepts, example questions & explanations for Pre-Algebra

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Example Questions

Example Question #11 : One Step Equations With Decimals

Solve for :

Possible Answers:

Correct answer:

Explanation:

Explanation:

The goal is to isolate the variable on one side.

Divide each side by :

Example Question #12 : One Step Equations With Decimals

Solve for .

Possible Answers:

Correct answer:

Explanation:

 Subtract both sides by . Remember,  can also be written as 

Example Question #11 : One Step Equations With Decimals

Solve for 

Possible Answers:

Correct answer:

Explanation:

 Subtract both sides by 

Example Question #12 : One Step Equations With Decimals

Solve for .

Possible Answers:

Correct answer:

Explanation:

 Subtract both sides by 

Example Question #13 : One Step Equations With Decimals

Possible Answers:

Correct answer:

Explanation:

 Add both sides by 

Example Question #16 : One Step Equations With Decimals

Solve for .

Possible Answers:

Correct answer:

Explanation:

 Add both sides by . Remember,  can also be written as 

Example Question #14 : One Step Equations With Decimals

Solve for 

Possible Answers:

Correct answer:

Explanation:

 Add both sides by 

Example Question #18 : One Step Equations With Decimals

Solve for .

 

Possible Answers:

Correct answer:

Explanation:

 Divide both sides by . Both decimals each have one decimal place so the expression becomes: .

Example Question #19 : One Step Equations With Decimals

Solve for .

Possible Answers:

Correct answer:

Explanation:

 Divide both sides by . Both decimals each have one decimal place so the expression becomes: .

Example Question #20 : One Step Equations With Decimals

Possible Answers:

Correct answer:

Explanation:

 Divide both sides by . Both decimals each have one decimal place so the expression becomes: . When dividing negative values, we count the number of negative values. Since there's two, the answer is positive. 

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