Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 17 and 23? 2. There will be a canoe race. The blue team has 6 canoes. The yellow team has 8 canoes. The green team has 4 canoes. What is the average number of the canoes in a team? 3. A sheep pen holds 11 sheep and another sheep pen holds 3 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 18 years old, and Jay is 24 years old. How old will Jay be when Susan is 29 years old? 5. What is the number with the same distance from 0 and 520? 6. Anne has 73 marbles, and Nancy has 51 marbles. How many marbles does Anne need to give Nancy so that each of them has the same number of the marbles? 7. There were 7 boys with the heights of 43 inches, 44 inches, 45 inches, 46 inches, 47 inches, 48 inches, and 49 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 69 books on the first layer. There are a total of 64 books on the second and third layer. There are 67 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 + ... + 84 + 85 =? |