# Math

Chapter 2  FRACTIONS:

lesson 1: fractions to decimals and decimals to fractions

Lesson 2: Compare and order fractions and decimals

Lesson 3: Multiply Fractions

Lesson 4: Simplify fractions

Lesson 5: Investigate and Model Dividing fractions \

Lesson 6: Estimate Quotients

Lesson 7: Divide Fractions

Lesson 8: Investigate and Model Mixed Number Division

Lesson 9: Divide Mixed Numbers

Lesson 10: Problem Solving with Fraction Operations

Math Vocabulary: terms will be added as we go.  It is important to ;learn the language of math!

benchmark: a familiar number used as a point of reference

common denominator:  when two or more factions have the same denominator.  Adding and Subtracting fractions requires common denominators.

common factor: a number that is a factor of two or more numbers

compatible numbers:  Numbers that can be divided evenly.  Used in estimating division

decimal: a part of a whole number expressed in tenths, hundredths, thousandths, etc.-placed after a decimal point. (powers of ten)

denominator:  it is how many parts a whole number is divided into.  The bottom number of a fraction.  When adding and subtracting, you must first make common denominators.

difference: the answer to a subtraction problem

dividend: the number that is to be divided in a division problem

divisor: the number that divides the dividend

equivalent fractions: two or more fractions that name the same amount

factor : one or more numbers that are multiplied together to get a product

Fraction: part of a whole number with a numerator and a denominator

Greatest Common Factor (GCF):  used when simplifying fractions. The largest factor that two or more  numbers have in common

Inverse operations:    operations that   The largest f another one.  Adding and subtracting are inverse operations as are multiplying and dividing.

Least Common Multiple (LCM): number that is smallest (least)common multiple of two or more numbers:

mixed number a number represented by a wholenumber and a fraction

multiplicative inverse one of two numbers whose product is 1

numerator:  The number of parts of the divided whole number.  it is the top of the fraction, the numerator.  Tells how many fractional parts there are

prime factorization: a number written as the product of all of its prime factors

prime number:  a number that has exactly two factors : 1 and itself

product: the answer to a multiplication problem

quotient: the answer to a division problem

reciprocal:one of two numbers whose product is 1

simplest form a fraction in which 1 is the only number that can divide evenly into the
numerator and the denominator