Mai has 40 tens. write how many hundreds. write the number

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?