Cube root A number that must be multiplied by itself three times to obtain a given number. this is said “cube root of 8”

Right triangle A triangle with one angle measuring 90°. Right angle

An angle that measures exactly 90°.

Leg Either of the legs connected to the base of a trapezoid or triangle. legs

Hypotenuse The side opposite the right angle in a right triangle.

Trigonometric Of or relating to the principles of trigonometry. Studies relationships involving lengths and angles of triangles.

Cubed Raised to the third power.

Expanded notation Writing a number to show the value of each digit. (1 x 100,000) + (2 x 10,000) + (9 x 1000) + (3 x 100) + (4 x 10) + (7 x 1) Expanded notation

Integer exponent An exponent that is any integer, positive, negative or 0. exponent

Radical

Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Real number The set of all rational and irrational numbers.

Power of ten A number with 10 as a base and a whole-number exponent. 10 6

Tenth power Raising a number to the tenth power is multiplying a number by itself 10 times.

Scientific notation Scientific notation is a way to write a number as the product of a number between 1 and 10 and a power of 10. written in scientific notation would be:

Logarithm The logarithm base ( b ) of a number ( x ) is the power to which b must be raised in order to equal x.

Irrational numbers Numbers that cannot be written as a single fraction. The decimal goes on forever without repeating.

Terminating decimal A decimal that end at some point.

Rational number Any number that can be written as a fraction

Repeating decimal A decimal with a sequence of digits that repeats itself indefinitely.

Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Prime factorization The expression of a number as the product of prime factors.