problem+solving

1.) Sheila is playing in a tennis doubles tournament. The rules say that the average age of the pair of players on each side must be 10 years or younger. Sheila is 8 years old. How old can her partner be in order to play? media type="custom" key="4435417"

2.) John has played in four baseball games this season. He struck out an average of twice per game. In the last three games, he never struck out. How many times did he strike out in the first game of the season? media type="custom" key="4435419"

 3.) Jerry took five spelling tests. He scored 100 percent on all but one. His lowest score was 80 percent. What was his mean score for the spelling tests? media type="custom" key="4435381"

4.) Tina bought seven pens. Four of the pens cost a dollar each. Three of the pens cost 30 cents each. What was the average cost of each pen? media type="custom" key="4435383"

5.) The Adams family wanted to buy a car for $5800. The car dealer offered the Adams family two options for buying the car. They could pay the full amount in cash, or they could pay $1000 down and $230 a month for 24 months on the installment plan. How much more would they pay for the car on the installment plan? media type="custom" key="4435387"

6.) Lisa Lilly was the best runner in the eighth grade. One day she ran 100m in 40 seconds, 200m in 1 minute and 10 seconds, and 200m over low hurdles in one and a half minutes. How many more seconds did it take her to run the 200m over low hurdles than it did to run the 200m dash? media type="custom" key="4435393"

7.) What is the sum of all the digits in the sequence 1, 2, 3, 4, 5, 6, 7, ... 99, 100? NOTE: (Sum of the digits, not the numbers!) media type="custom" key="4435411"

8.) Silver's Cleaners raised the price of dry cleaning a sport coat from $4 to $5. The same percentage increase was applied to dry cleaning a jacket. The old cost of dry cleaning a jacket was $10. What is the new cost of dry cleaning a jacket? media type="custom" key="4435401"

9.) Four strips of paneling 40 cm long and 4 cm wide are arranged to form a square. What is the area of the inner square in cm2? media type="custom" key="4435409"

10.) Chip said to Dale, "If you give me one acorn, then we will have an equal number of acorns." Dale replied with delight, "If you give me one acorn, then I will have double the number you have!" What was the total number of acorns they had in their tree? How many did Chip have and how many did Dale have? media type="custom" key="4435407"