Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 20 and 24? 2. There will be a canoe race. The blue team has 7 canoes. The yellow team has 8 canoes. The green team has 6 canoes. What is the average number of the canoes in a team? 3. A sheep pen holds 11 sheep and another sheep pen holds 9 sheep. To make each sheep pen hold the same number of sheep, how many sheep need to be moved from one sheep pen to the other sheep pen? 4. Nancy is 12 years old, and Curtis is 20 years old. How old will Curtis be when Nancy is 24 years old? 5. What is the number with the same distance from 0 and 1956? 6. Mary has 54 marbles, and Julia has 28 marbles. How many marbles does Mary need to give Julia so that each of them has the same number of the marbles? 7. There were 8 boys with the heights of 47 inches, 50 inches, 53 inches, 56 inches, 59 inches, 62 inches, 65 inches, and 68 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 70 books on the first layer. There are a total of 57 books on the second and third layer. There are 45 books in the fourth layer. How many books are there in average on a layer of the shelf? 9. A 12-hour clock chimes once at 1:00, twice at 2:00, three times at 3:00, etc. How many times does the clock chime altogether in one 12-hour period? 10. Find the sum of 1 + 2 + 3 + 4 + ... + 86 + 87 =? |