Prime Numbers
Square Numbers
Triangle Numbers
Factors
100
List the first 7 prime numbers
2, 3, 5, 7, 11, 13, 17
100
How can we rewrite the following calculation (without solving it!)
35^2
100
Write down the first three triangular numbers.
1, 3, 6
100
List all the factors of 8
1, 2, 4, 8
200
Explain why Evie is wrong.
2 is even and prime
200
Work out
11^2
121
200
Which is the triangular number?
25\ \ \ \ \ 27\ \ \ \ \ 28\ \ \ \ \ 30
28
200
Is 3 a factor 14?
No, it is not.
300
From the box, choose the largest prime number.
101
300
Write down the square numbers from the list below:
4, 16, 81, 121
300
What is the largest triangular number that is less than 100?
91
300
21\ \ \ \ \ 25\ \ \ \ \ 30\ \ \ \ \ 45
Which number is the odd one out? Why?
25 because it's not divisible by three.
400
Write three different prime numbers that have a sum of 40.
2+ 7 + 31
400
100 can be written as the sum of two difference squares. What are they?
36 and 64
400
John is adding consecutive triangular numbers.
John says, “when I add consecutive triangular numbers, I get another kind of special number.”
What kind of number does John get?
Square numbers
400
Mary 26 sweets and is able to share them evenly between her friends.
Mary has more than one friend.
How many friends might she have?
2, 13, or 26 friends
500
Find three different prime numbers that have a product of 165
3 \times 5 \times 11
500
"If you square a number the answer is always bigger."
Give one example to prove this statement incorrect.
Anything below or equal to 1.
500
1 is a triangular number and a square number. Find another number that is both.
36
500
Do all numbers have an even number of factors?
No square numbers have an odd number.