Translating Word Phrases:

- (5 min) Mental Math
- Start with 125, multiply by 10, then subtract 50 [1200]
- What is the decimal for 526 divided by 100? [5.26]
- What is the area of a triangle whose base is 9 inches and whose height is 18 inches? [81 sq. in.]
- What is the perimeter of a rectangle whose sides are 3 1/2 feet and 4 1/2 feet? [16 feet]
- What is 600 times 600? [360,000]

- (5 min) Review of homework #13 (<= 3 problems)

- (10 min) Discuss word phrases and word problems:

- (5 min) Discuss these phrases and the
expressions they represent:
Phrase Expression three times a number 3x half of a number x/2 one minus three times a number 1 - 3x a number increased by 5 x + 5 a number decreased by 8 x - 8 - (5 min) Discuss word equations. Discuss the fact that the following
phrases are equal ("=") signs:

- "you get ..."
- "the result is ..."
- "is ..."

Discuss these sentences and the*equations*they represent:English sentence Equation I subtract one from my number and I get five. x - 1 = 5 I multiply my number by 4 and I get 8. 4x = 8 I take half of my number, decrease it by 6 and the result is 4. x/2 - 6 = 4

- After this discussion, pass out the word phrases handout along with the in-class exercise.

- (5 min) Discuss these phrases and the
expressions they represent:
- (Remainder of class) In-class Exercise.

- Hand out homework as students successfully complete the in-class exercise.