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7th Grade Math Chapter 1
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Key Concepts:
Terms in this set (12)
Rational Number
A number that can be written as m/n. (it can be written as a fraction)
Irrational Number
A number that cannot be written as a fraction. Decimal will go on forever without repeating.
Negative integers
The set of integers to the left of 0 on a number line. -5,-4, -3, -2, -1
Opposites
Two numbers that are the same distance from 0 but are on opposite sides of 0 on the number line.
Positive integers
Numbers to the right of zero on a number line. 1,2,3,4
Terminating Decimal
A decimal that ends.
Repeating Decimal
A decimal that repeats.
A decimal that repeats a digit or group of digits forever.
Approximate
close to the actual, but not completely accurate or exact
Real Number
Rational numbers and irrational numbers form the set of _____________
Real number line
A line that allows us to visually represent real numbers by associating them with points on the line.
Significant Digits
meaningful digits in a quantity
Precise
exact
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