Monthly Archives: November 2010

Algebra 1a: Chapter 3, Lesson 10, page 152. Using Percent The ratio of numbers to 100 is called percent. Percent means “per one hundred”. We use whickity-whack divide, the method that Ms. Phillips taught us in 7th grade. Here is … Continue reading →

Algebra 1a: Chapter 3, Lesson 9, page 148. Proportions A ratio of 2 quantities is a comparison, often expressed as a fraction. An equation that states that 2 ratios are equal is called a proportion. I prefer to just criss-cross, … Continue reading →

Algebra 1a: Chapter 3, Lesson 8, page 145. Solving Equations Involving Absolute Value The absolute value of a number, `|x|` is its distance from zero on the number line. Remember that the absolute value is always positive. Treat absolute value … Continue reading →

Algebra 1a: Chapter 3, Lesson 7, page 142. Formulas Formulas that use more than 1 letter are often called literal equation. Use the formula and solve for the desired variable by treating all other variables as if they are constants … Continue reading →

Algebra 1a: Chapter 3, Lesson 6, page 139. Clearing an Equation of Fractions or Decimals In equations containing fractions, you can use the multiplication property to make the equation easier to solve. To clear the equation of fractions, multiply both … Continue reading →

Algebra 1a: Chapter 3, Lesson 5, page 136. More on Solving Equations Solve equations by first getting all variables on the same side of the equation. Get rid of the paranthesis too (distributive property if required). Go slow and ONCE … Continue reading →

Algebra 1a: Chapter 3, Lesson 4, page 130. Expressions and Equations The phrase the quantity suggests a grouping of terms will follow. The words sum of, difference of , product of and quotient of also suggests a grouping of terms … Continue reading →

Algebra 1a: Chapter 3, Lesson 3, page 125. Using the Properties Together You can solve these equations in a variety of ways. Remember the objective is to ISOLATE the variable on one side. You can add, subtract, multiply or divide … Continue reading →