How to use a bar model to work out 10% of 500 (I know this I just want to make sure.)

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

What is the least common factor of 6 and 8