A sports ball has a diameter of 21 cm. find the volume of the ball.

Geoffrey is trying to earn $50 to buy a video game. He has saved $14.25. He earns $3.75 per hour cleaning windows with his uncle and he earns $6.50 per hour working at the grocery store.

logan spends 26 of his weekly allowance on 2 banana splits. Banana splits cost $3.25 each at Frozen Treats. How much money does Logan receive for his weekly allowance?

1/5 greater or less than 2/6

20 to 25% is a 25% increase. true or false?

16cm/min equals how many meters in one hour

Which of the numbers in each pair is farther to the left on the number line?

Movie tickets for 2 adults and 3 children cost $44.50. Tickets for the same movie cost $23.50 for 1 adult and 2 children. How much is the ticket for adults?

How do you solve a monomials when there is a number in front of the parentheses

A construction crew has just finished a road. The crew worked for 2 4/5 days. If they built 3 2/7 kilometers of road each day, what is the total length of road they built?

Four friends split equally a lunch bill of $36.96 plus 20% tip. how much did each person pay?