Square Roots on Number Lines

Front

What is a square root?

Back

A square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 9 is 3, because 3 x 3 = 9.

Tags

CCSS.8.EE.A.2

Front

How can square roots be represented on a number line?

Back

Square roots can be represented on a number line by marking the points that correspond to the square root values. For example, the square root of 4 (which is 2) would be marked at the point 2 on the number line.

Tags

CCSS.8.NS.A.2

Front

What is the square root of 16?

Back

The square root of 16 is 4, because 4 x 4 = 16.

Tags

CCSS.8.EE.A.2

Front

What is the relationship between perfect squares and square roots?

Back

Perfect squares are numbers that have whole number square roots. For example, 1, 4, 9, 16, and 25 are perfect squares, as their square roots (1, 2, 3, 4, and 5 respectively) are whole numbers.

Tags

CCSS.6.EE.A.1

Front

How do you estimate the square root of a non-perfect square?

Back

To estimate the square root of a non-perfect square, find the two perfect squares it lies between. For example, to estimate the square root of 10, note that it lies between the square roots of 9 (3) and 16 (4). Thus, the square root of 10 is between 3 and 4.

Tags

CCSS.8.NS.A.2

Front

What is the square root of 25?

Back

The square root of 25 is 5, because 5 x 5 = 25.

Tags

CCSS.6.EE.A.1

Front

How can you verify if a number is a perfect square?

Back

To verify if a number is a perfect square, calculate its square root and check if the result is a whole number. If it is, then the number is a perfect square.

Tags

CCSS.8.EE.A.2

Front

What is the square root of 0?

Back

The square root of 0 is 0, because 0 x 0 = 0.

Tags

CCSS.8.EE.A.2

Front

What is the square root of a negative number?

Back

The square root of a negative number is not a real number. It is represented as an imaginary number. For example, the square root of -1 is denoted as 'i'.

Tags

CCSS.HSN.CN.A.1

Front

How do you simplify square roots?

Back

To simplify square roots, factor the number under the square root into its prime factors and look for pairs. For example, √18 can be simplified to √(9*2) = √9 * √2 = 3√2.