Integers and Number Laws
Define an integer.
A whole number including all positive numbers, negative numbers and zero.
What distinguishes a prime number from a composite number?
Prime Numbers have only 2 factors; itself and 1.
An integer that may be divided by another a certain number of times to obtain a whole number answer.
is a factor or multiple?
Multiple
Which of these is not a perfect square?
a) 9
b) 36
c) 64
d) 111
d) 111
The purpose of BIDMAS is to help us ...
solve problems with multiple opperations
When subtracting a number, we go left/right on the number line.
Left.
Is 1 a prime number?
No
List a factor pair of 24.
(1,24), (2,12), (3,8), or (4,6)
What is 92?
81
The I in BIDMAS stands for...
Indices or Index
Which opperational law tells us that reordering the numbers does not alter the answer. Hint: there can be 2 correct answers.
a) The Distributive Law
b) The Commutative Law
c) The Associative Law
d) BIDMAS
b or c
Which of these isn't a prime?
a) 3
b) 7
c) 21
d) 31
c) 21
List the first 5 multiples of 8.
8, 16, 24, 32, 40
What is the square root of 144?
12
(3+5) X 2
16
Using a mental or written strategy, solve the following:
48,000 / 600
80
Is 49 a prime or composite number? Explain.
49 is a Composite as it has more than 2 factors. It is the product of 7 X 7 and 1 X 49.
/ \
6 __
/ \ / \
3 2 5 2
10
Is 46 a perfect square? Explain why/why not.
No. It is not the square of a whole number, or when square rooted, it does not equal a whole number.
42 + 3 X 5
31
In a class election with 3 candidates, the winner beat the other 2 candidates by 3 and 6 votes respectively. If 27 votes were cast, how many votes did the winner receive? Show how you reached your answer.
12 votes.
Is 131 a prime or composite number? Explain your answer.
131 is a Prime. It is not divisible by any other number besides 1 and 131.
What is the HCF of 8 and 24?
8
The square root of 30 falls between which two consecutive whole numbers?
5 and 6.
(20 - 22) / 4 X (3 + 7)
40