2. The “G.U.E.S.S.” Problem Solving Method All problems must be done this way or no points will be awarded

3. G.U.E.S.S. is an Acronym G stands for given U stands for unknown E stands for equation S stands for substitute S stands for solve

4. G = Given James drives 100 km in 5 hr what’s his speed? What information is given in the problem? The distance and the time G d = 100 km t = 5 hr Notice all values have a unit/label

5. U = Unknown James drives 100 km in 5 hr what’s his speed? What is the question, what are you solving for? Speed U S = ?

6. E = Equation James drives 100 km in 5 hr what’s his speed? What is the equation/formula that we use to solve for speed? E s = d/t

7. S = Substitute James drives 100 km in 5 hr what’s his speed? G d = 100 km t = 5 hr U s = ? E s = d/t Replace the variable with their value. Replace d with 100 km and t with 5 hr S s = 100 km/5 hr

8. S = Solve James drives 100 km in 5 hr what’s his speed? G d = 100 km t = 5 hr U s = ? E s = d/t S s = 100 km/5 hr S s = 20 km/hr The solution includes a value with units

9. All problems must be done this way or no points will be awarded!!!

10. GUESS done horizontally An alternative way

11. G = Given James drives 100 km in 5 hr what’s his speed? What information is given in the problem? The distance and the time G d = 100 km t = 5 hr Notice all values have a unit/label

12. U = Unknown James drives 100 km in 5 hr what’s his speed? What is the question, what are you solving for? G d = 100 km t = 5 hr U S = ?

13. E = Equation James drives 100 km in 5 hr what’s his speed? What is the equation/formula that we use to solve for speed? G d = 100 km t = 5 hr U S = ? E s = d/t

14. G d = 100 km t = 5 hr U S = ? E s = d/t s = 100 km/5 hr S S = Substitute James drives 100 km in 5 hr what’s his speed? Replace the variable with their value. Replace d with 100 km and t with 5 hr

15. G d = 100 km t = 5 hr U S = ? E s = d/t S = Solve James drives 100 km in 5 hr what’s his speed? s = 20 km/hr S s = 100 km/5 hr S

16. G d = 100 km t = 5 hr U S = ? E s = d/t S = Solve James drives 100 km in 5 hr what’s his speed? s = 20 km/hr S s = 100 km/5 hr S

17. Megan drives her scooter with an average speed of 23.0 km/h. How long will it take her to drive 9 km?

18. How far is it from school to the store if it takes 15 minutes to walk there, if you walk at 3 mi/h. Give your answer in km. Before substituting convert min to h 15 min 1h 0.25 h 60 min G t = 15 min s = 3 mi/h U d=? kmE s = d/t S 3 mi = d__ h 0.25 h S d = 0.75 mi now convert mi to km 0.75 mi 1.609 km 1.2 km 1 mi d = 1.2 km x 0.25 h 0.25 h x