2011 MATHEMATICS TEAMS CHALLENGE
Primary Relay
Time: 60 min
Calculators Allowed
100 points
-------------------------------------------------------------------------------------------------------------------------------------R1. (4 points)
What is the next number in the sequence?
[96 points remaining]
8, 15, 24, 35, 48, ____
R2. (4 points)
[92 points remaining]
Use the code A = 1, B = 2, C= 3, D= 4, ….Y = 25, Z = 26, to determine the numerical value of the word
MATHEMATICS?
R3. (6 points)
[86 points remaining]
A stadium has 6 main entry gates. How many different ways are there of entering and leaving the stadium, if
you can’t exit the same way you entered?
R4. (2 points)
[84 points remaining]
What is the largest 2-digit prime number? [Note: A prime number only has factors of 1 and itself]
R 5. (4 points)
What is the 100th digit in the sequence below?
7, 11, 15, …..
[80 points remaining]
R 6. (8 points)
[72 points remaining]
Alex throws 3 darts at a dartboard. Assuming all 3 darts always land on the board, how many different totals are
possible? The target scores are 10, 20 and 50.
R 7. (4 points)
What is the next letter in this pattern?
[68 points remaining]
J, F, M, A, M, J, J, A, S, O, N, __
R 8. (8 points)
[60 points remaining]
The angles of a triangle are consecutive even numbers which add up to 180⁰. What is the size of the largest
angle?
R 9. (6 points)
[54 points remaining]
What is the maximum number of pieces you can cut a pizza into with just four cuts? [Note: The pieces aren’t
necessarily equal in size]
R 10. (4 points)
[50 points remaining]
What is the magic number?
 Reverse the digits of 278 to make a second 3-digit number.
 Subtract the smaller number from the larger number to make a third 3-digit number.
 Reverse the digits to make a fourth 3-digit number.
 Add the third and fourth number to reveal the magic number.
R 11. (6 points)
[44 points remaining]
How many different 2-digit numbers can be made with the digits 3, 4, 5, 6 and 0? Each 2-digit number has
different digits.
R12. (6 points)
[38 points remaining]
Jack has the choice of 4 ties, 3 shirts and 2 pairs of pants. How many different outfit choices does he have?
R 13. (6 points)
[32 points remaining]
In 2011, 1st February fell on a Tuesday. On what day of the week did April’s Fools’ Day fall in 2011?
R 14. (8 points)
What is the value of the missing number?
[24 points remaining]
R 15. (2 points)
Which one of the following numbers is the smallest?
[22 points remaining]
1
,
3
3
,
10
333
,
1000
7
20
, 0.33
R 16. (4 points)
What is the value of ((1 + 2) × 3 – 4) ÷ 5 + 6 × 7 – (8 + 9) = ?
[18 points remaining]
R 17. (4 points)
What is the number in the shaded box which makes the subtraction correct?
[14 points remaining]
R 18. (4 points)
[10 points remaining]
A school has 425 students arranged in rows for a school photo. There are 20 students in the first row and each
subsequent row contains an extra 5 students. How many rows are there in total?
R 19. (6 points)
[4 points remaining]
th
In the decimal 0.123456789123456789…..(recurring) what is the 2011 digit after the decimal point?
R 20. (4 points)
How many parallelograms are in this figure?
[0 points remaining]
Problem
R 1 (4 points)
R 2 (4 points)
R 3 (6 points)
R 4 (2 points)
Change
R 5 (4 points)
R 6 (8 points)
R 7 (4 points)
R 8 (8 points)
Change
R 9 (6 points)
R 10 (4 points)
R 11 (6 points)
R 12 (6 points)
Change
R 13 (6 points)
R 14 (8 points)
R 15 (2 points)
R 16 (4 points)
Change
R 17 (4 points)
R 18 (4 points)
R 19 (6 points)
R 20 (4 points)
MATHS TEAM CHALLENGE (2011)
Relay Answer Sheet
PRIMARY
Answer
Attempts √ or ×
Score Progressiv
8 7 6 5 4 3 2 1
e Score
63
112
30
97
Change
Change
403
10 scores
D
62
Change
Change
11
1089
16
24
Change
Change
Friday
21
3
10
26
Change
Change
8
10 rows
4
15
Total
School:___________________________________
Team 1:
Team 2: