Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 1 and 9? 2. There will be a canoe race. The blue team has 5 canoes. The yellow team has 7 canoes. The green team has 6 canoes. What is the average number of the canoes in a team? 3. A sheep pen holds 9 sheep and another sheep pen holds 1 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. Jessica is 17 years old, and George is 25 years old. How old will George be when Jessica is 36 years old? 5. What is the number with the same distance from 0 and 678? 6. Jessica has 71 marbles, and Helen has 45 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 6 boys with the heights of 39 inches, 40 inches, 41 inches, 42 inches, 43 inches, and 44 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 39 books on the first layer. There are a total of 69 books on the second and third layer. There are 44 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. In addition, the clock chimes once at half-past each hour. How many times does the clock chime altogether in one 24-hour period? 10. Find the sum of 1 + 2 + 3 + 4 + ... + 75 + 76 =? |