Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 23 and 27? 2. There will be a canoe race. The blue team has 6 canoes. The yellow team has 7 canoes. The green team has 5 canoes. What is the average number of the canoes in a team? 3. A sheep pen holds 12 sheep and another sheep pen holds 8 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. Susan is 12 years old, and Richard is 17 years old. How old will Richard be when Susan is 26 years old? 5. What is the number with the same distance from 0 and 668? 6. Jessica has 75 marbles, and Helen has 39 marbles. How many marbles does Jessica need to give Helen so that each of them has the same number of the marbles? 7. There were 8 boys with the heights of 47 inches, 48 inches, 49 inches, 50 inches, 51 inches, 52 inches, 53 inches, and 54 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 45 books on the first layer. There are a total of 62 books on the second and third layer. There are 53 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 24-hour period? 10. Find the sum of 1 + 2 + 3 + 4 + ... + 99 + 100 =? |