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![Page 1: Cube root A number that must be multiplied by itself three times to obtain a given number. this is said cube root of 8](https://reader036.fdocuments.in/reader036/viewer/2022082419/5a4d1b787f8b9ab0599b7dc3/html5/thumbnails/1.jpg)
• 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
”
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Right triangle
A triangle with one angle measuring 90°.
Right angle
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Right angle
An angle that measures exactly 90°.
𝟗𝟎°
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Leg
• Either of the legs connected to the base of a trapezoid or triangle.
legs
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Hypotenuse
The side opposite the right angle in a right triangle.
Hypotenuse
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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
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Cubed
Raised to the third power.
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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
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Integer exponent
An exponent that is any integer, positive, negative or 0.
exponentX3
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Radical
The symbol , which is used to represent the square root or “nth” of a number.
√
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Mathematics Vocabulary - Grade 7
©Partners for Learning, Inc.
Real number
The set of all rational and irrational numbers.
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Power of ten
• A number with 10 as a base and a whole-number exponent.
106
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Tenth power
Raising a number to the tenth power is multiplying a number by itself 10 times.
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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:
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• 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
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• Irrational numbers
• Numbers that cannot be written as a single fraction. The decimal goes on forever without repeating.
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• Terminating decimal
• A decimal that end at some point.
𝟑𝟏𝟐
=.𝟏𝟐
𝟏𝟖=.𝟏𝟐𝟓
𝟗𝟏𝟔 =.𝟓𝟔𝟐𝟓
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Rational number
Any number that can be written as a fraction.
-4 634
5.5
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• Repeating decimal
• A decimal with a sequence of digits that repeats itself indefinitely.
77600=0 .128333
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Mathematics Vocabulary - Grade 7
©Partners for Learning, Inc.
Prime factorization
The expression of a number as the product of prime factors.