Squares and Exponents
What is 52?
25
Name a factor of 24
1, 2, 3, 4, 6, 8 or 12
TRUE OR FALSE: 72 is a multiple of 36
true
What does it mean for a number to be divisible by another number?
It can be divided by that number with no remainers
Name any prime number
2, 3, 5, 7, 11, 13, 17, 19 .... etc ....
Which of the following is a perfect square?
16 5 7 20
16
(4 x 4 = 16)
Name a factor of 120 that is higher than 25
30, 40, 60 ...
Which is NOT a multiple of 7: 14, 21, 28, 34
34
How do you know if a number is divisible by 2?
It is even
Which is NOT a prime number:
3, 5, 8, 11, 13
8
TRUE OR FALSE: "The square root of 36 is 6"
TRUE
What is the HCF of 8 and 12?
4
What is the LCM of 6 and 9?
18
What numbers is 16 divisible by?
1, 2, 4, 8
What are the only two factors of a prime number?
1 and itself
What is 5x5x5x6x6 simplified?
(simplified not calculated)
53x62
What is the HCF of 96 and 21
3
LCM is the _____ multiple that two or more numbers share
lowest or smallest
How do you know that 2,378,000 is divisible by 8?
The last three digits are 0
Give an example of 26 in prime factorisation.
2x13
What is 5x5x5x7x7x8x7x8 simplified?
53x73x82
TRUE OR FALSE: A factor can be larger than the number itself.
(e.g. 6 could have a factor larger than 6)
FALSE. Numbers only have factors equal to themselves and smaller.
What is the LCM of 12 and 16?
48
What is the test for divisibility by 7?
there is no known test for this!
Is 1 a prime number, composite number, neither or both?
neither.