Social Studies
Pi
3:9
and
9:12
Equivalent? Why/Why not?
because 3:9 is equivalent to 9:27
because 9 is not a multiple of 12
The ratio of sugar to flour is 10:4
Suddenly you discover that half of your friends can't make it, so you only need to make cookies for 6.
What is your new ratio of sugar to flour?
What is unique about the number 8549176320 ?
It is the digits 0 to 9 in alphabetical order.