weight and mass
operations with numbers
ratio & proportion
geometry in the plane
geometry in space
logic & set theory
The problems in this section explore ideas of time including relations among units and converting from one unit to another within the same system.
- Related Resources
Interactive resources from our Math Tools project:
Math 7: Measurement: Time
The closest match in our Ask Dr. Math archives:
Middle School: Measurement
Measurement Standard for Grades 6-8
Access to these problems requires a Membership.
Days on Other Planets
- Cynthia Lanius, Suzanne Alejandre
Pre-Algebra, difficulty level 2. How old in Earth years would you be after spending time on another planet?
A Happy New Year Wish
- Suzanne Alejandre, Ian Underwood
Pre-Algebra, difficulty level 2. Explain how time differences are calculated and understood using
- Jackson Geometry Class
Pre-Algebra, difficulty level 3. The power went out. Use the current reading on the clocks to determine when the power went out, and for how long.
Sailing Around the World
- Leon Roland & class
Pre-Algebra, difficulty level 2. Determine the amounts of the supplies that Giuseppi Linguini will need to sail around the world.
- Judy Ann Brown
Pre-Algebra, difficulty level 2. Use the given information to find the temperature.
- Suzanne Alejandre
Pre-Algebra, difficulty level 1. What is the minimum amount of time I can spend on the train commuting
to and from work in one week?
- Annie Fetter & Ian Underwood
Pre-Algebra, difficulty level 2. At what time does the end of the train emerge from the tunnel?