Integers, Primes, Roots
Find the value of 52
25
Write down the first five multiples of 9.
9, 18, 27, 36, 45
Is this sequence finite or infinite?
3, 5, 7, 9, ...
Infinite
multiply the number by 6
6n
b - 3 when b = 120
117
What is the square root of 400?
20
Find all the factors of 21.
1, 3, 7, 21
Write down the first three terms of the sequence.
First-term: 30
the term-to-term rule is "subtract 4"
30, 26, 22
multiply the number by 5 then add 1
5n + 1
3e when e = 20
60
Work these out.
a. -4 + -7
b. -5 - -3
a. -11
b. -2
Find the prime factors of 28.
2 and 7
A pattern is made from squares. Pattern 1 has 3 squares, pattern 2 has 5 squares and pattern 3 has 7 squares. Write down the term-to-term rule.
add 2
divide the number by 2 then subtract 10
(n/2) - 10
(j/2) + u when j =30 and u = 3
18
List all the prime numbers between 80 and 90.
83 and 89
Find the least commom multiple (LCM) of 6 and 8.
24
A pattern is made from squares. Pattern 1 has 3 squares, pattern 2 has 5 squares and pattern 3 has 7 squares. How many squares will be there in pattern 8?
17
David has a bag with s sweets in it. Write an expression for someone who has a bag with 6 fewer sweets than David.
s - 6
pq/3 when p = 5 and q = 6
10
Albert notices that his freezer is getting colder by 4 degrees every minute. The temperature now is 6oC. What wil be the temperature in 5 minutes?
-14oC
Find the highest common factor (HCF) of 12 and 15.
3
The fourth term of the sequence is 18. The term-to-term rule is: "Subtract 3 then multiply by 3". What is the first term of the sequence?
5
Rainia is given $d for her birthday. She spends a quarter of the money on make-up. How much does she spend on make-up?
$d/4
a. Write a formula for the number of seconds in any number of minutes using letters.
b. Use the formula from part a to work out the number of seconds in 10 minutes.
a. S=60M
b. 600 seconds