Am in fourth grade can u give me some math question

Penny and Kenny have the same number of football cards. Penny has sorted her cards into piles of 10. Kenny has sorted his cards into piles of 18. Penny has less than 100 cards. How many football cards do they have?

Sommer bought a baseball card for x dollars. Later, she sold it for 1.4x dollars. Which is another way to describe the change in the price of the baseball card? A. $0.04 increase B. $0.40 increase C. 4% increase D. 40% increase

Toya can run one lap of the track in 1 min. 3 sec., which is 90% of her younger sister niki's time. what is niki's time for one lap?

Let E be the event that a corn crop has an infestation of ear worms, and let B be the event that a corn crop has an infestation of corn borers. Suppose that P (E) = 0.24, P (B) = 0.16, and P (E and B) = 0.13.

If had $200 at the beginning of the summer. i spent $25 per week. how much will i have left after x number of weeks

Simplify: (-14 (-67 (28)

Which strategy would not correctly solve this story problem? Ella babysits her baby brother for 30 minutes on Monday, for 45 minutes on Thursday, and for 35 minutes on Friday. Ella will continue this schedule for 6 weeks.

What is the gcf of 50 and 44

Which expression is equal to 6 (---3m) 4? A) 6 (---3) (4) m4 B) - 18m4 C) 6 (---3) 4m4 D) 64 (---3) 4m4

A scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface after 40 seconds. What is the scuba diver's rate of change? Round to the nearest tenth.