Day 42 – October 23

Algebra, Chapter 4, Lesson 5, page 187.

Using Inequalities

We learned key phrases for lesson 5 (word translation problems):

  • “Less than or equal to”, “is at most”, “no more than” — ≤
  • “No less than”, “at least”, “more than or equal to” — ≥
  • “Is less than” — <
  • “Is greater than” — >

We learned to read the problem, draw a picture or understand what is being asked of us before we start solving an equation or inequality.

Remember for 2 step inequalities, we do the same, again, as equalities and solve by:

  • Distributing when required
  • Combining like terms
  • Adding or subtracting terms to isolate variables and numbers (constants)
  • Multiplying or dividing to finish solving for the variable, remembering to reverse the sign of the inequality IF we multiply or divide by a NEGATIVE NUMBER.

Here are some keyword descriptions from purplemath.com to help us with word problems (ugh …)

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