美国大联盟2020-2021三年级初赛试题

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1. At Peggy’s Bank, the ATM distributestwenty-dollar bills and hundred-dollar bills. How many twenty-dollar billsequals 5 hundred-dollar bills?

A 1

B 10

C 20

D 25

 

2 Steve plans to paint two of the 6 cellsblack, figure below, so that the two black cells share a vertex but not a side.In how many different ways can be achieve this?

A 3

B 4

C 5

D 6

图片

 

3 I have the same number of quarters and ofdimes, and so no other type of coins. Which of the following could be theamount of money I have?

A 70¢

B 4000¢

C 5050¢

D 10000¢

 

4 Emily walks from her home to school. Herschool is 3 blocks east and 2 blocks of her home. From her home, she can goonly east or south at each intersection. In how many different ways can shewalk from home to school if she always s walks to school along the blocks, asshown in the drawing below?


A 6

B 8

C 10

D 12

图片

 

5 Steve the Storm Chaser Is carriedwestward by a tornado 10m every second. In one minute, the tornado has movedSteve ()

A 60m

B 100m

C 600m

D 1000m

 

6 Simona painted for 101 minutes andfinished at 1:00 P.M. At what time did she start?

A 10:59 A.M.

B 11:09 A.M.

C 11:19 A.M.

D 11:59 A.M.

 

7 Chocolate bars of 36, 48 and 54 grams arebroken apart so that all of the pieces of all of the bars are of equal weight.If these pieces are the largest possible, how many pieces are there in total?

A 21

B 23

C 30

D 42

 

8 eight 10s + nine 9s + ten 8s = ()

A 241

B 243

C 245

D 720

 

9 The length of one side of a triangle is14, and the triangle has a perimeter of 56. The ratio of the lengths of theother two sides of the triangle is 3:4. What is the length of the longest side?

A 18

B 24

C 28

D 32

 

10 Every 20 minutes buses stop at the busstop. On average, how long does a person have to wait for a bus if the persondoes not know the schedule and shows up at a random time?

A 5

B 10

C 15

D 20

 

11 Which of the following four quotients isunequal to the order three?

A 2/1

B 200/100

C 201/101

D 222/111

 

12 $2000 - 200¢ +$20 - 2¢=

A $1999.98

B $2017.80

C $2017.98

D $2020.20

 

13 At Willy’s Candy Shoppe, malt balls arepriced per ounce and there is also a charge of 25 cents for each bag. If Cindypays 75 cents for her 5 ounce bag of malt balls, how much is a 10 ounce bag ofmalt balls.

A $1.00

B $1.25

C $1.50

D $1.75

 

14 Dividing 33 by which of the followinggives the largest remainder?

A 12

B 13

C 14

D 15

 

15 Which of the following polygons has anodd number of sides?

A octagon

B trapezoid

C pentagon

D hexagon

 

16 If 4 Cinnabombs cost one-half as much as3 Yum Buns, how many Cinnabombs cost the same amount as 6 Yum Buns?

A 4

B 8

C 12

D 16

 

17 I have the same number of nickels, ofdimes, and of quarters, and no other type of coins. If the sum of these coinsis $6. how many of each type of coin do I have?

A 15

B 25

C 30

D 45

 

18 Five years ago my brother was 5 yearsyounger than I was. If he is 21 years now, how old will I be in 5 years?

A 16

B 26

C 11

D 56

 

19 The product of 40 000 and 50 000contains exactly () zeros?

A 9

B 10

C 11

D 12

 

20 Karen plays tennis every Thursday. Whatis the greatest number of days she can play tennis in a 25-day period?

A 3

B 4

C 5

D 6

 

21 I am thinking of the square of a wholenumber. The ones digit of the number I am thinking could be ()

A 2

B 3

C 5

D 7

 

22 On Jimmy’s 16th birthday,Oscar was three times as old as Jimmy. On Jimmy’s 21st birthday, howold was Oscar?

A 32

B 48

C 53

D 63

 

23 9 * () = 9 + 99 + 999

A 111

B 123

C 130

D 133

 

24 Each number after the first two numbersin a sequence is the sum of all the previous. If the 10th number is1000, then the 8th number is ()

A 125

B 200

C 250

D 500

 

25 Which of the following number leaves aremainder, which is a prime number, when divided by 8, 9, and 10? (Theremainders when divided by 8, 9, and 10 are not necessary the same.)

A 75

B 54

C 33

D 21

 

26 The length of a rectangle is a wholenumber. If the area of the rectangle is 48, its remainder could be ().

A 38

B 40

C 48

D 56

 

27 An otherwise empty square roof has 5flags along each edge, including a flag at each corner. How many flags are onthe roof in total?

A 16

B 17

C 19

D 20

 

28 If the cost of 12 popsicles is $22, whatis the cost of 3 popsicles?

A $4.00

B $5.50

C $6.00

D &7.50

 

29 Which of the following is the product ofexactly two different prime number?

A 2

B 4

C 6

D 8

 

30 Which of the following has the greatestproduct of quotient and remainder?

A 35 / 2

B 35 / 3

C 35 / 4

D 35 / 5

 

31 43 * 47 = 2021 * ()

A 0

B 1

C 2

D 3

 

32 How many whole numbers less than 100 aredivisible by 22?

A 3

B 4

C 5

D 10

 

33 Knave of Hearts: “I stole the tarts.”

Knave of Clubs: “The Knave of Hearts islying.”

Knave of Diamonds: ”The Knave of Clubs islying.”

Knave of Spades: “The Knave of Diamonds islying.”

How many of the four Knaves were tellingthe truth?

A 1

B 2

C 3

D 4

 

34 What is twenty thousand less than threehundred and seven thousand?

A 107000

B 277000

C 287000

D 305000

 

35 The sum of the digits of the year 2021is 5. How many years from 2021 will the sum of the digits of the year next be5?

A 9

B 81

C 89

D 99




发布于 2024-05-12 18:26

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