Average Problems( Week 9 Evaluation) 1. What is the natural number comes exactly in the middle between 12 and 22? 2. There will be a canoe race. The blue team has 7 canoes. The yellow team has 8 canoes. The green team has 6 canoes. What is the average number of the canoes in a team? 3. A sheep pen holds 12 sheep and another sheep pen holds 10 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. Jane is 18 years old, and David is 21 years old. How old will David be when Jane is 29 years old? 5. What is the number with the same distance from 0 and 744? 6. Susan has 79 marbles, and Mary has 47 marbles. How many marbles does Susan need to give Mary so that each of them has the same number of the marbles? 7. There were 5 boys with the heights of 46 inches, 49 inches, 52 inches, 55 inches, and 58 inches respectively. What is their average height in inches? 8. A book shelf has four layers. There are 49 books on the first layer. There are a total of 40 books on the second and third layer. There are 35 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 + ... + 87 + 88 =? |