Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 21 and 27? 2. There will be a canoe race. The blue team has 4 canoes. The yellow team has 6 canoes. The green team has 5 canoes. What is the average number of the canoes in a team? 3. A sheep pen holds 10 sheep and another sheep pen holds 6 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. Morgan is 13 years old, and Jackson is 19 years old. How old will Jackson be when Morgan is 26 years old? 5. What is the number with the same distance from 0 and 378? 6. Morgan has 76 marbles, and Martha has 56 marbles. How many marbles does Morgan need to give Martha so that each of them has the same number of the marbles? 7. There were 9 boys with the heights of 40 inches, 41 inches, 42 inches, 43 inches, 44 inches, 45 inches, 46 inches, 47 inches, and 48 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 47 books on the first layer. There are a total of 51 books on the second and third layer. There are 34 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 12-hour period? 10. Find the sum of 1 + 2 + 3 + 4 + ... + 52 + 53 =? |