SAT Math : How to square a decimal

Study concepts, example questions & explanations for SAT Math

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Example Questions

Example Question #1 : How To Square A Decimal

If all real values of x lie between 0 and 1, which of the following is always greater than 1?

Possible Answers:

\frac{x}{10}

x+1

5x^{2}

x^{2}

x^{4}

Correct answer:

x+1

Explanation:

If x is greater than 0, then adding 1 to x will make it greater than 1. Taking a number between 0 and 1 to a power results in a smaller number.

Example Question #2 : How To Square A Decimal

Evaluate:

0.082

Possible Answers:

0.00064

0.064

0.64

0.0064

0.00064

Correct answer:

0.0064

Explanation:

0.08 * 0.08

First square 8:

8 * 8 = 64

Then move the decimal four places to the left:

0.0064

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