How do you know that 2/3 is in simplest form

Lisa played her cd for 3 hours every day for 5 days. how many hours did she play it? how many minutes?

For every 24 minutes of television there are 6 minutes of commercials. How many are there in 1 hour and 36 minutes of television

Round to the nearest tenth 18 is what percentage of 79

Ms. Rose brought a package of star stickers. Out of every 10 stars, 4 are gold. If there are 60 stars in the pack, what fraction of the stars in the pack are gold? What percent of stars in the pack are gold?

3.6 divides by 1.2 on a grid

10 - 5-2r - 13) - 7

A tiger can eat food that weighs up to 15% of its body weight. If a tiger can eat 75 pounds of food, how much does the tiger weigh?

What is the value of the expression |48: (-6) |+|-35:7|

Don and Donna are preparing a budget for the coming year. They want to know how much to budget each month for the electric bill.

Write in algebraic expression (the product of 5 and p increased by 10)