Five students in our class computed their ages. tina is 9 1/4 years old, chris is 9 5/12, austin is 9 7/12, jody is 9 1/2, and noah is 9 3/4. what is the sum of their ages?

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.

Erik buys 2.5 pounds of cashews. if each pound of cashews costs $7.70, how much will he pay for the cashews?

How many zeroes do we write when we write all the integers 1 to 243 in base 3?