For 1 through 12, compare. write > , < , or = for each ( ) 1. 4m ( ) 400dm 2. 4dm ( ) 40cm 3. 10l ( ) 1000 ml 4. 2kg ( ) 1500 g 5. 15cm ( ) 150mm 6. 1km ( ) 999m 7. 4l ( ) 4500 ml 8. 500g ( ) 5 kg 9. 6km ( ) 6000m 10. 200cm ( ) 3m 11. 3000m ( ) 2km 12. 100mm ( ) 1dm - 13. which measurement is not equal to 3m? a 30 dm b 300cm c 3000m or d 3000cm? - 14. writing to explain if 5 potatoes together have a mass of 1km and 8 pears together have a mass of 1,200g, which has the greater mass, a potato or a pear? explain.

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Laura read 1/8 of a comic book in 2 days. she reads the same number of pages every day. what part of the book does she read in a week