Number Concepts Review

Number Concepts Review

• Different types of numbers include: natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.

Multiples and Factors

• A multiple is a product of a given number and an integer.
• A factor is a whole number that divides another number exactly without leaving a remainder.

Prime Numbers

• A prime number is a positive integer that is divisible only by itself and 1.
• Examples of prime numbers include 2, 3, 5, and 7.

Working and Directed Numbers

• Working numbers are positive and negative numbers used to represent quantities in different directions.
• Directed numbers are used to solve problems involving directions, such as movement or location.

Powers, Roots, and Law of Indices

• Powers, or exponents, represent repeated multiplication of a base number.
• Roots, such as square roots or cube roots, represent the inverse operation of powers.
• The law of indices states that an exponent can be added or subtracted according to the rules of multiplication and division.

Order of Operations

• The order of operations is a set of rules used to evaluate mathematical expressions in a specific order: parentheses, exponents, multiplication and division, and addition and subtraction.

Rounding and Estimating

• Rounding involves approximating a number to a specific degree of precision, such as to the nearest ten or hundred.
• Estimating involves approximating a quantity or value, often using mental calculations or rough estimates.