Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 29 and 39? 2. There will be a canoe race. The blue team has 7 canoes. The yellow team has 9 canoes. The green team has 5 canoes. What is the average number of the canoes in a team? 3. A sheep pen holds 14 sheep and another sheep pen holds 12 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. Alice is 19 years old, and John is 25 years old. How old will John be when Alice is 37 years old? 5. What is the number with the same distance from 0 and 456? 6. Hillary has 72 marbles, and Laura has 44 marbles. How many marbles does Hillary need to give Laura so that each of them has the same number of the marbles? 7. There were 8 boys with the heights of 45 inches, 47 inches, 49 inches, 51 inches, 53 inches, 55 inches, 57 inches, and 59 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 73 books on the first layer. There are a total of 53 books on the second and third layer. There are 50 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 + ... + 79 + 80 =? |