Real Number System Review

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What is the Real Number System?

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The Real Number System includes all the numbers that can be found on the number line. This includes rational numbers (like integers and fractions) and irrational numbers (like square roots of non-perfect squares).

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What is a whole number?

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Whole numbers are non-negative numbers without fractions or decimals. They include 0, 1, 2, 3, and so on.

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What is scientific notation?

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Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It is written as a product of a number (between 1 and 10) and a power of 10.

Tags

CCSS.8.EE.A.3

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How do you convert a large number to scientific notation?

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To convert a large number to scientific notation, move the decimal point to the left until only one non-zero digit remains to the left of the decimal. Count the number of places moved; this will be the positive exponent of 10.

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What does the exponent in scientific notation indicate?

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The exponent in scientific notation indicates how many places to move the decimal point. A positive exponent means the number is large, while a negative exponent means the number is small.

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CCSS.8.EE.A.3

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Back

Between 2 and 3.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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What is the range for the factor in scientific notation?

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The factor must be greater than or equal to 1 but less than 10.

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CCSS.8.EE.A.3

Front

How do you determine the placement of a square root on a number line?

Back

To determine the placement of a square root on a number line, find the two whole numbers it falls between by squaring them.

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CCSS.8.NS.A.2

Front

Convert 125,678,000 to scientific notation.

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1.25678 x 10^8.

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CCSS.8.EE.A.3

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Back

It represents a very small number.

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CCSS.8.EE.A.3