Third Grade Challenging Math.docx

Third Grade Challenging Math

1.

There are 2 rings and 6 triangles. Move the rings and triangles so that each ring has 4 triangles in them.

2. June 1st is a Friday. What other Fridays are in June? 3. Jen is reading a book that has 102 pages. If she reads 9 pages a day, how many days will it

take her to finish the book? 4. Mike is reading a book that has 125 pages. If he reads 8 pages a day, how many days will it

take him to finish the book? 5. Sam paid $4.00 for 8 bananas. How much would he pay for 12 bananas? 6. What is the perimeter of the shape below?

7. What is the area of the shape above? 8. Calculate the following:

A) 9999 + 99 + 2 = ____

B) 9998 + 998 + 4 = ______

9. How many 3 digit numbers can you make using the digits: 2, 4, and 0? Use each digit no

more than once in each number. 10. Room 1 and Room 2 have 58 students in total. 4 students are transferred from Room 1 to

Room 2. Now the two rooms have the same number of students. How many students were there in each room before the transfer? 11. Fill in the blanks.

12. Fill in the blanks.

13. The drawings below indicate fruits on balances. Which fruit is the heaviest? Which fruit is

the lightest?

14. The drawings below indicate animals on balances. Which animal is the heaviest? Which

animal is the lightest?

15. Find the pattern and fill in the blanks.

A. 21, 17, __, 9, __, 1 B. 1, 2, 4, 8, __, 32, 64 C. 160, 80, 40, 20, __, __

16. Lincoln Elementary school has four 3rd grade classes. Each class has 22 students. At the

end of the school year, 5 students transferred to another school. How many students are left in the 3rd grade at the end of school year? 17. Fill in the blanks.

1 1x __ = 121

__ x 12 = 144

18. Find the pattern and fill in the blanks.

(2, 3), (4, 6), (6, 9), (8, 12) .... The 5th group is (__, __) The 8th group is (__, __)

19. How many triangles are there below?

20. Of all the numbers between 10 and 99 inclusive, how many times does the digit "1" appear? 21. Fill in the blanks.

1, 2, 4, _, _, 32, 64, 128

22. Fill in the blanks.

1, 12, 3,10, 5, 8, 7, __, __

23. Ming writes down numbers from 1 to 22. How many times does Ming write the digit “1”? 24. Gonzalo has 5 baskets that hold 15 pears total. Each basket has a different number of pears.

How many pears are there in each basket? 25. How many rectangles are in the drawing below?

26. How many triangles are in the diagram below?

27. Smart subtractions:

A) 478 - 30 - 278 =

B) 343 - 199 =

28. It is 6:20 pm. What time will it be 120 minutes from now?

29. It is 5:30 pm. What time will it be 180 minutes from now? 30. John began to read at 10:00 am. At 2:20pm he stopped reading. How many minutes did

John read? 31. Smart additions:

A) 12 + 82 + 65 + 18 + 35 + 88 = B) 41 + 42 + 43 + 44 + 45 + 46 + 47 + 48 + 49 =

32. Smart calculations:

A) 171 - 86 - 71 =

B) 88 + 87 - 88 =

33. Mr. Yellow, Mr. Red and Mr. Blue need to pick 1 of 3 pens that are yellow, blue and red. They

do not want to pick a pen that matches their last name. Mr. Yellow also does not want a blue pen. What color pen did Mr. Yellow, Mr. Red and Mr. Blue pick? 34. Annie, Ben and Carol go to 3 different elementary schools: A, B and C. Annie does not go to

schools B or C. Carol does not to go school B. Which schools do the 3 kids go to? 35. Ken bought a book for $8.35 and a bag of pens for $3.25. He used a $20 bill to pay for them.

How much change did Ken get? 36. Jane's parent bought a pizza. Jane ate half of the pizza and her brother ate half of the

remaining pizza. How much of the pizza is left? 37. A bag of candy costs $2.00. How much do 6 and a half bags of candy cost? 38. Mr. King bought 7 packs of markers for his class. The total cost of markers is $98. If every

pack of markers cost the same amount, how much does each pack cost? 39. There are 5 red socks and 5 black socks in a drawer. If David picks socks without looking,

how many socks does he need to pick in order to be sure of getting one pair of socks? 40. There are 9 red socks and 9 black socks in a drawer. If David reaches for socks without

looking, how many socks does he need to get in order to be sure of getting TWO pairs of socks? 41. Fill in the blanks.

A)

8 x __ = 120

B)

__ x 9 = 153

42. How many months are there in 9 years? 43. How many weeks are there in 4 years? 44. The perimeter of a rectangle is 42 inches. The length of the rectangle is 12 inches. What is

the area of the rectangle?

45. Mike gets paid ₱60 an hour cleaning his neighbor's yard. On Saturday, he cleaned from 2:00

pm to 5:00 pm. How much money did he make? 46. Find the sequence and fill in the blanks.

1, 12, 3, 10, 5, 8, 7, __, __

47. How many squares are here?

48. How many rectangles are here?

49. A group of kids sit in a stadium to watch a basketball game. Counting from the aisle, Joe is

the 7th, and Matt is the16th. How many kids are there between Joe and Matt? 50. What is the time difference between 5:15 am and 10:23 am in the same day? 51. Today is Sunday. What day of the week is 5 days before the day after tomorrow? 52. Farmer Joe has 2 roosters and 4 hens. The chickens laid 24 eggs in all. On an average, how

many eggs did each hen lay? 53. Smart calculations

a) 171 - 56 - 71 = 54. Smart calculations

a) 25 + 37 + 75 =

55. Smart calculations

a) 325 - 86 - 25 =

b) 288 + 87 - 88 = b) 58 + 75 + 25 = b) 274 + 38 - 74 =

56. A soccer team, The Tigers, have 4 girls and 8 boys. Another soccer team, The Lions, have

twice as many players as The Tigers. How many players are there in all for both teams? The perimeter of the rectangle is 36 inch. The length of the the rectangle is 10 inch. What is the area? 57. The perimeter of the rectangle is 36 inch. The length of the the rectangle is 10 inch. What is

the area? 58. If Marry reads 2 pages per minute, how many pages does she read in 1 hour? 59. If Marry reads 2 pages per minute, how many pages does she read in 3 hours? 60. List all squares of numbers from 1-12. 61. One piece of lumber was cut to 5 feet long pieces. Six cuts were made. How long was the

lumber? 62. Jane starts playing tic-tac-toe with her brother at 7:20 am. School starts at 8:25 am and it

takes her 15 minutes to get to school. What is the longest amount of time she can play with her brother? 63. Mystic Melissa, known for her insanity, gave away 49 of her “magic” stones on the first day.

On the second day she gave away 23 less than the first day. On the third day she gave away double what she gave away on the first day. And on the last day she gave away 56 more than she gave away on the third day. How many “magic” stones did she give away in all? 64. Kate and Aidan had 50 stickers in all on Monday. On Tuesday, Aidan gave Kate 5 stickers, so

they had the same number of stickers. How many stickers did they have at the beginning? 65. If a store makes $700 a day, how much money does it make in 3.5 days? 66. What do the following letters have in common?

EDOICX

67. Add +, -, x and/or ( ) signs to make the equations work

2 4 3 1 = 12 2 4 3 1 = 14 2 4 3 1 = 23

68. Smart calculations

A) 2659 + 25 - 59 B) 1349 + 220 - 349 C) 3487 + 325 - 487

69. A family has 3 siblings A, B and C. A has 2 brothers. B has 1 sister and 1 brother. How many

brothers and sisters does C have?