Fractions
Write 17 3/8 as an improper fraction
139/8
92,39 - 37,28
55,11
List these countries in order of area, smallest to largest:
Country Area (km2)
Brazil 8,51 x 106
Panama 7,71 x 104
Guyana 2,15 x 105
Colombia 1,14 x 106
Panama, Guyana, Colombia, Brazil
What is a factor?
What is the next prime number after 89?
97
(imagine these are fractions)
1/7 + 2/5
19/35
18,24 ÷ 0,06
304
The distance from Buenos Aires to Wellington is approximately 10 100 kilometres.
Write this number in scientific notation.
1,01 x 104
List all the primes under 20. You must get them all, with no mistakes, to get this correct.
2, 3, 5, 7, 11, 13, 17, 19
From the list below give
a) a prime number
b) a factor of 27
c) a multiple of 4.
All three must be different numbers. You need all three for the point
√4, √14, √36, √64, √81, √100
a) √4 = 2
b) √81 = 9
c) √64 = 8
(imagine these are fractions)
5/9 x 6/15
(Your answer is only correct if it is fully simplified)
2/9
1,28 x 0,031
0,03968
Write 0,00362 in standard form
3,62 x 10-3
What are the prime factors of 80?
80 = 2 x 2 x 2 x 2 x 5 = 24 x 5
Estimate the answer to
(8,95 - 3,05 x 1,97) ÷ 2,92
About 1
(imagine these are fractions)
1 2/6 ÷ 1 3/8
(Your answer is only correct if it is fully simplified)
32/33
(7,1)2 - 6,7 x 3,1
29,64
A book has 565 sheets of paper.
a) How many sheets of paper are there in 2000 books? Give you answer in scientific notation
b) Each book is 28,25mm high. How thick is one sheet of paper? Write your answer in scientific notation.
(Need both answers to get the point. You have 1 extra minute to answer)
a) 1,13 x 106
b) 5 x 10-2
What are the prime factors of 3630?
3630 = 2 x 3 x 5 x 11 x 11 = 2 x 3 x 5 x 112
Complete this maths joke:
Why was the maths book sad?
It had a lot of problems.
(imagine these are fractions)
1/2 + 2/3 - 1/6 + 2/9
(Your answer is only correct if it is fully simplified)
1 2/9
3.28-(2.1 + (-3,5))2
1,32
Work out 2,6 x 10-3 + 9,1 x 10-3
Write your answer in scientific notation
1,17 x 10-2
Find the prime factors of 43 + 92
5 x 29
The team that chose this loses 200 points.
That's it. You just lose 200 points.
Next question!