Introduction
to Fractions and Decimals
Pre-algebra – The 3rd grading period
Preparations for fractions: Topics include prime factorization, greatest common factor (GCF), least common multiple (LCM), simplifying fractions, exponents and multiplying and dividing monomials.
Tip: This unit
makes a transition from whole number fractions to fractions that include
monomials.
Examples:
What is the biggest
number that divides evenly into 18 and 24? (GCF) Answer: 6
What is the smallest
number that 18 and 24 divide evenly into? (LCM) Answer: 72
The prime factorization of 81? Answer: 3 x 3 x 3.
To learn more about factors and multiples:
Or (find least and greatest common
factors in
More Glencoe sample problems are available online:
Glencoe Chapter Test, Chapter 4
Do you want to take a Douglass
Chapter 4 practice test?
Douglass Chapter Test, Chapter 4 (part A)
Douglass Chapter Test, Chapter 4 (part B)
Douglass Chapter Test, Chapter 4 (part C)
Douglass Chapter Test, Chapter 4 (part D)
Douglass Chapter Test, Chapter 4 (part E)
Douglass Chapter Test, Chapter 4 (part F)
Douglass Chapter Test, Chapter 4 (part G)
Douglass Chapter Test, Chapter 4 (part H)
Topics include adding, subtracting, multiplying and dividing decimals, as well as solving equations with negative and positive decimal numbers called rational numbers.
Tip: The next two
units in grading period 3 cover fractions and decimals.
The Glencoe text mixes fractions
and decimals in chapter 5 and 6. We pull
out all of the sections in chapters 5 and 6 that involve decimals and work with
these first. Students will then take a
chapter test just on decimal facts. Unlike
sixth grade, students will need to solve equations involving negative and
positive decimals. We will then return to chapter 5 and 6 again to work
exclusively with fractions.
·
Chapter 5/6
Fraction Test: Students
must pass chapter 5/6 Fraction test with a “C” better.
Topics
include adding, subtracting multiplying and dividing fractions and mixed
numbers. As with the unit on decimals,
this chapter includes solving one-step equations with negative or positive
fractions or mixed numbers.
More Glencoe sample problems are available online:
Glencoe
Chapter Test, Chapter 5
Glencoe
Chapter Test, Chapter 6
Do you want to take a Douglass Chapter 5 practice test?
Douglass Chapter Test, Chapter 5