Pre Algebra

Rational and Irrational NumbersBoth rational and irrational numbers are real numbers. This Venn Diagram shows the relationships between sets of numbers. Notice that rational and irrational numbers are contained in the large blue rectangle…

Hints for Remembering the Properties of Real NumbersCommutative Property – interchange or switch the elements Example shows commutative property for addition: X + Y = Y + X Think of the elements as “commuting” from one location to another.…

Hints for Remembering the Properties of Real NumbersCommutative Property – interchange or switch the elements Example shows commutative property for addition: X + Y = Y + X Think of the elements as “commuting” from one location to another.…

Review of ExponentsExponents are the mathematician’s shorthand.In general, the format for using exponents is: (base)exponent where the exponent tells you how many of the base are being multiplied together.Consider: 2 • 2 • 2 is the same as…

Review of ExponentsExponents are the mathematician’s shorthand.In general, the format for using exponents is: (base)exponent where the exponent tells you how many of the base are being multiplied together.Consider: 2 • 2 • 2 is the same as…

How do you Multiply and Divide Decimals?Multiplication of Decimal NumbersMultiplication of a decimal by 10, 100, 1000 etc.:Method: On multiplying a decimal number by 10, 100, 1000, … the decimal point is shifted to the right by one, two,…

What are Laws of Exponents?Laws of ExponentsLaw-1: If a is any non-zero integer and m and n are whole numbers, thenam × an = am + nEg : Therefore, in general, we write, Read More:What is an Exponent?Review of ExponentsSurdsLaw-2: If a and…

What are Laws of Exponents?Laws of ExponentsLaw-1: If a is any non-zero integer and m and n are whole numbers, thenam × an = am + nEg : Therefore, in general, we write, Read More:What is an Exponent?Review of ExponentsSurdsLaw-2: If a and…

How do you Calculate Simple Interest?Simple Interest Interest: Interest is the amount paid in lieu of using some money which is not owned by us.The amount of money deposited, lent or borrowed is called principal (P).The additional money…

What is an Exponent?ExponentsThe repeated addition of numbers can be written in short form (product form). Examples: Also, we can write the repeated multiplication of numbers in a short form known as exponential form. For example, when 5…