Math 1 · Unit 8 · Lesson 1 · part 5 of 5
Practice Problems
Try them, get help one step at a time, then print how it went.
Practice: try it, then get help one step at a time
Percent to decimal, then finding I, A, r, t, and P. Hint names the move, Show next step shows one worked step at a time with the calculator keys, Reveal answer checks, and Hide help / start over clears the card. Money is written to the cent.
My results
Finished the practice? Print a page that shows each question, what you typed or chose, the correct answer, and how it went. Good for showing a teacher or keeping in a folder.
Exit ticket
On paper or an index card. Use the math word and the plain-English word.
- What does simple interest pay interest on, and why does that make a line?
- $500 at 4% simple interest for 6 years: find I and A.
- Solve I = Prt for r. Then: $400 earned $60 in 5 years. What was the rate?
- In A = 300 + 15t, what are the y-intercept and the slope, in money words?
Check your exit ticket
- On the principal only, so the same dollars are added every year: a constant difference.
- I = 500 × 0.04 × 6 = $120.00. A = $620.00.
- r = IPt = 602000 = 0.03 = 3%.
- $300 is the principal; $15 is added each year (a rate of 5%).