2003 ELIMINATION - Metrobank-MTAP-DECS-NCR Math Challenge

Grade 5

_________ 1. What is the value of 7 in 472,356?

_________ 2. Change 9/16 to 64ths.

9/16, 18/32, 27/48, 36/64

_________ 3. 23 x 33 x 102 = _______ .

8 x 27 x 10021, 600

_________ 4. 368,501 equals ___________ when rounded off to the

nearest thousand.

369,000

_________ 5. Which number has both 2 and 9 as factors? 6282, 7282, 8380

6, 282

_________ 6. The greatest common factor (GCF) of 24, 36, and 60 is ?

12

_________ 7. The least common multiple (LCM) of 24, 36, and 60 is ?

360

_________ 8. 7 + 6 = __________.

13 17/24

_________ 9. 7 x 6 = __________.

36/5 x 20/3=48

_________ 10. 12 ¾ - 5 = __________.

7 7/20

_________ 11. When 4768 is divided by 49 the remainder is _________ .

15

_________ 12. Last year, I bought a book for ₱88.50. This year the price is ₱104.25.

How much is the increase in price?

• ₱104.25- ₱88.50= ₱15.75

_________ 13. What are the prime numbers between 70 and 80?

71, 73, 79

_________ 14. If 1 is excluded, how many common factors do 36 and 48 have?

5(2, 3, 4, 6, 12)

_________ 15. If one side of a square is increased by 5 cm, then the perimeter is

increased by _____ cm.

20

_________ 16. The ratio of the price of a bed to a sala set is 3 : 4. If the sala set costs

₱10,000 what is the cost of the bed?

10,000/4= 2, 5002, 500 x 3= ₱ 7, 500

_________ 17. The number which is 35 more than 47 – 19 is?

28 + 35= 63

_________ 18. If one hectare is 10,000 square meters, how many hectares are in 2

square kms.?

One hectare= 100m x 100=.1 km x .1 km=.01 km²

2 km².01 km²= 200 hectares

_________ 19. A rectangle has a length of 15 dm. If the area is 120 dm2, then the width is ?

A= l x w120 dm² = 15 dm x w 15 dm 15 dm8

_________ 20. How many angles can you name from the figure?

– D

E C B

o AAnswer 10

_________ 21. Joy bought 2 notebooks at ₱9.50 each and 4 ballpens at ₱4.75 each.

How much change did she get from a ₱50-bill?

19+19= 3850-38= ₱ 12

_________ 22. A cube has an edge of 9 cm. What is the total surface area?

9 cm

9 cm 9 cm

9 x 9= 8181 x 6= 486 cm³

_________ 23. It takes 22 m. to make 3 pairs of window drapes. How many meters will it

take to make a dozen pairs?

12/3= 44 x 22= 88 m

_________ 24. How many decimal places are there in the product of 1.051

x 0.0311?

7

_________ 25. If 3254 x 63.58 = 3.254 x N, what is N ?

3.254 x 63 580=63, 580

_________ 26. The product of 32 x 31 is closest to which multiple of 10 ?

32 x 31= 992990

_________ 27. By how much is 34 larger than 43?

3 4 = 3x3x3x3= 814³= 4x4x4= 6481-64= 17

_________ 28. I am thinking of a number. Twice the number plus 5 equals 29. What is the number?

2N + 5 = 292N= 29-52N= 24 2 2=12

_________ 29. The sum of three numbers is 99. The first is 10 greater than the

second and 20 greater than the third. What is the

largest of the three numbers?

43

_________ 30. In a spelling test of 50 items, Larry got 90% correctly. How many mistakes

did he make?

50 x .90= 4550-45= 5

_________ 31. How many numbers between 30 and 60 contain the digit 2?

32, 42, 523

_________ 32. What digit can you place in the blank so that 456,7_ 2 is

divisible by 9?

Answer is 3

_________ 33. In 644,651 , how many times as great is the underlined 6 than

the 6 that is not underlined?

• 600 000/600= 1, 000

_________ 34. Suppose your step is 4.5 dm long and you can make 92 steps in

one minute. At that rate, about how far, in meters, is

your house from school if you take 5 minutes to go to school?

4.5 x 92= 414 dm in one minute414 x 5= 2,070 dm2,070/10= 207 meters

_________ 35. Change 0.125 to a fraction in lowest terms.

125/1,0001/8

_________ 36. The perimeter of a rectangle is 54 cm. If the length is 3 cm.

longer than the width, what is the length of the rectangle?

54/4=13.5 W= 12 l= 15

_________ 37. Divide ₱140 among Tom, Jake and Larry so that Tom

gets twice as much as Jake and Jake gets as much as

Larry. How much does Tom get?

_________ 38. What is the smallest 4-digit number that you

can make using 0, 4, 5 and 6 ?

_________ 39. A dozen doughnuts and a loaf of bread cost ₱75, half a

dozen doughnuts and a loaf cost ₱48. How much does a

loaf of bread cost?

_________ 40. An angle is 78o. What is its supplement ?

_________ 41. Nine sheets of bond paper cost ₱2.50. How much will

45 sheets cost ?

_________ 42. One base angle of an isosceles triangle is 62o. What is

the vertex angle ?

_________ 43. The perimeter of a triangle is 75 cm. If two sides are

21 cm and 27 cm, how long is the third side?

_________ 44. A farmer kept track of his cows and hens by counting the legs and heads. If he counted 78 legs and 35 heads,

how many cows did he have ?

_________ 45. What is the perimeter of the figure if all angles are right angles?

20m 20m

35 m 35 m

55 m

75m

_________ 46. What is the area of the same figure?

_________ 47. A tank contains 105 liters of water when 70% full. How

many liters does it contain when full?

_________ 48. I paid ₱126 for a dress at a 16% discount. What is

the marked price?

_________ 49. In 3 months the price of pork increased from ₱85.50 to

₱97.50. What is the percent increase to nearest percent?

_________ 50. Three numbers are in the ratio 3 : 4 : 6. If the middle

number is 28, what is the sum of the 3 numbers?