lesson #13- translating words into math. the secrets of translating words into math type problems...
TRANSCRIPT
Lesson #13- Translating Words into Math
The Secrets of Translating Words into Math Type Problems
Secret 1: Read the problem and Highlight important information.
Secret 2: Define your variables
Secret 3: Setup the equations
Secret 4: Solve showing all of your work.
Secret 5: Check your answer and write a final statement
7) Nancy is 2 years older than Eric. In 5 years, the sum of their ages will be equal to 40. What is the present age of each?
x: Eric’s Agex+2: Nancy’s Age
(x+5) + (x+2+5)
2x+12 = 40
= 40
-12 -12 2x = 28 2 2 x = 14
Eric is 14 & Nancy is 16.
12) Johnny buys 8 oranges and gets 20 cents back in change from a $5 bill. What is the price of an orange?
x: Price of an orange in cents
8x + 20 = 500 -20 -20 8x = 480 8 8 x = 60 cents
An orange costs 60 cents
16) A salesman has a base salary of $175 per week and a commission of $25 per item sold. How many items did he or she sell? Her total salary was $500.
x: price of an item in $
+ 25x 175 = 500 -175 -175 25x = 325
25 25 x = 13 items
He sold 13items.
Homework
Complete Levels III-V
Choose any 5 word problems on pg. 76-78 to complete.