Math League 4th 2010真题
1. The product of 2, 0, 1, and 1 is
A) 0 B) 1 C) 2 D)4
2. The sum of all even numbers between 1 and 9 is
A) 8 B) 12 C) 20 D) 35
3. Didi the dancing dog danced for exactly one week.
For how many hours did Didi dance?
A) 24 B) 84 C) 128 D) 168
4. How many 25 gumballs can I buy for $5?
A) 10 B) 20 C) 40 D) 80
5. I have 60 marbles. If I put as many of these marbles as I can into 7 equal piles, how many marbles are left over?
A) 1 B) 4 C) 6 D) 11
6. Which number is 1000 tens minus 100 tens?
A) 9000 B) 9900 C) 9990 D) 9999
7. I round 4567 to the nearest 10, then I subtract 4567. I end up with
A) 3 B) 33 C) 333 D) 5433
8. If the perimeter of a rectangle is 20 and two of its sides each have a length of 4, what is the length of the other two side?
A) 16 B) 12 C) 8 D) 6
9. Otto did a handstand, and 1 out of every 5
pennies he had in his pockets fell out. If a total
of 19 pennies fell out, Otto must have started with
? pennies in his pockets.
A) 24 B) 76 C) 95 D) 114
10. I want to take a75-minute nap starting at 5:15. The
alarm used to end my nap should be set for
A) 6:00 B) 6:15 C) 6:30 D) 6:45
11. The product of 4 odd numbers is always
A) even B) odd C) prime D) greater than 20
12. The Bears’ picnic has too many ants! If the number
of ants is the least whole number greater than 0 that is
divisible by both 12 and 42, there are ? ants.
A. 54 B) 84 C) 124 D) 142
13. 15 + 15 + 15 + 15 + 15 + 15 = 5 x ?
A) 18 B) 15 C) 6 D) 5
14. A zoo has 3 times as many female animals as male animals. If there are a total of 24 animals in the z00, how many of these animals are female?
A) 21 B) 18 C) 16 D) 6
15. Each side of my triangle is twice as long as the diameter of my circle. If the radius of my circle is 4, what is the perimeter of my triangle?
A) 6 B) 24 C)32 D) 48
16.$100 +$20 +$3 + 400₵ + 50₵ + 6₵ =
A)$123.46 B)$124.56 C)$126.96 D)$127.56
17. How many whole numbers have more than 1 digit but fewer than 4?
A) 986 B) 988 C) 990 D) 992
18. Maddie earned $8 per hour helping her friend
move. She worked from Monday to Friday, 9 A.M.
to 5 P.M. each day. How much did Maddie earn?
A. $40 B)$64 C)$320 D)$448
19. There are 5 coins in my pocket. The total value of the
coins could not be
A) 14₵ B) 32₵ C) 43₵ D) 61₵
20. Of the following numbers, which is divisible by the 8reatest number of different whole numbers?
A) 112 B) 90 C) 30 D) 8
21.$1 in quarters and $5 in nickels is ? coins.
A) 8 B) 29 C) 104 D) 125
22. Chet made 80 pancakes. Some fell on plates,
but the rest fell on his face. If the number
of pancakes on plates is 16 greater than
the number on his face, ? are on plates.
A) 24 B) 32 C) 48 D) 56
23. Any number that is divisible by both
12 and 5 must also be divisible by
A) 21 B) 15 C) 9 D) 8
24. When 123 is divided by 4, the sum of the quotient and remainder is
A) 18 B)24 C) 30 D)33
25. The sum of three different even whole numbers cannot be
A) 4 B)12 C) 16 D) 20
26. The difference between the two largest divisors of 28 is
A) 27 B) 14 C) 7 D) 6
27. There are two prime numbers between
A) 10 and 15 B) 20 and 25 C) 26 and 30 D) 45 and 50
28. The first four stripes on a wall with 100 stripes are red, blue, white and purple, in that order. These four colors keep repeating in the same order. What color is the 55th stripe on the wall?
A) red B) blue C) white D) purple
29. In 20 years, Li will be 3 times as old as he is now. How old will he be in 10 years?
A) 10 B) 20 C) 30 D) 50
30. Harry's beard was 4 cm long at the end of the
day 4 days ago. If his beard doubles in length
every 24 hours, how long will Harry' s beard
be at the end of the day tomorrow?
A) 16cm B) 32cm C) 64cm D) 128 cm
