Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 21 and 25? 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 13 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. Martha is 13 years old, and Edward is 17 years old. How old will Edward be when Martha is 26 years old? 5. What is the number with the same distance from 0 and 258? 6. Jennifer has 61 marbles, and Hillary has 29 marbles. How many marbles does Jennifer need to give Hillary so that each of them has the same number of the marbles? 7. There were 8 boys with the heights of 43 inches, 44 inches, 45 inches, 46 inches, 47 inches, 48 inches, 49 inches, and 50 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 71 books on the first layer. There are a total of 57 books on the second and third layer. There are 48 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 + ... + 51 + 52 =? |