Post on 18-Jan-2018
description
• Cube root
• A number that must be multiplied by itself three times to obtain a given number.
this is s
aid
“cube ro
ot of 8
”
Right triangle
A triangle with one angle measuring 90°.
Right angle
Right angle
An angle that measures exactly 90°.
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.
Hypotenuse
Trigonometric
• Of or relating to the principles of trigonometry. Studies relationships involving lengths and angles of triangles.
𝒕𝒂𝒏𝜽=𝒔𝒊𝒏𝜽𝒄𝒐𝒔 𝜽
𝒔𝒆𝒄 𝜽=𝟏
𝒄𝒐𝒔𝜽 𝒄𝒔𝒄 𝜽=𝟏
𝒔𝒊𝒏 𝜽
𝒄𝒐𝒕 𝜽=𝟏
𝒕𝒂𝒏𝜽=𝒄𝒐𝒔𝜽𝒔𝒊𝒏𝜽
Cubed
Raised to the third power.
Expanded notation
Writing a number to show the value of each digit.
129,347(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.
exponentX3
Radical
The symbol , which is used to represent the square root or “nth” of a number.
√
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.
106
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.𝑙𝑜𝑔𝑏 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.
𝟑𝟏𝟐
=.𝟏𝟐
𝟏𝟖=.𝟏𝟐𝟓
𝟗𝟏𝟔 =.𝟓𝟔𝟐𝟓
Rational number
Any number that can be written as a fraction.
-4 634
5.5
• Repeating decimal
• A decimal with a sequence of digits that repeats itself indefinitely.
77600=0 .128333
Mathematics Vocabulary - Grade 7
©Partners for Learning, Inc.
Prime factorization
The expression of a number as the product of prime factors.