Factors -multiples-and-primes
Transcript of Factors -multiples-and-primes
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
StarterAnswer the following:
415 + 392
62 x 29 117 ÷ 3
653 - 328= 807
= 1798 = 39
= 325
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Types of numbers
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Multiples
A multiple is a number in another number’s times table.
For example, the first 5 multiples of 3 are
3, 6, 9, 12, 15
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Multiples
Find the first 10 multiples of the following numbers:
a) 3b) 6c) 7d) 12e) 15
3, 6, 9, 12, 15, 18…6, 12, 18, 24, 30, 36…7, 14, 21, 28, 35, 42…12, 24, 36, 48, 60, 72…15, 30, 45, 60, 75, 90…
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Factors
Factors are numbers that divide exactly into another number.
For example, factors of 12 are
121 x 122 x 63 x 4
= 1, 2, 3, 4, 6, 12
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Factors
Find all the factors of the following numbers:
a) 24b) 15c) 54d) 36e) 17
1, 2, 3, 4, 6, 8, 12, 241, 3, 5, 151, 2, 3, 6, 9, 18, 27, 541, 2, 3, 4, 6, 9, 12, 18, 361, 17
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Factors
Find all the factors of the numbers 1-201 12 1, 23 1, 34 1, 2, 45 1, 56 1, 2, 3, 67 1, 78 1, 2, 4, 89 1, 3, 910 1, 2, 5, 10
11 1, 1112 1, 2, 3, 4, 6, 1213 1, 1314 1, 2, 7, 1415 1, 3, 5, 1516 1, 2, 4, 8, 1617 1, 1718 1, 2, 3, 6, 9, 1819 1, 1920 1, 2, 4, 5, 10, 20
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Prime numbers
Prime numbers have ONLY TWO FACTORS. Which of the following are prime numbers? 1 12 1, 23 1, 34 1, 2, 45 1, 56 1, 2, 3, 67 1, 78 1, 2, 4, 89 1, 3, 910 1, 2, 5, 10
11 1, 1112 1, 2, 3, 4, 6, 1213 1, 1314 1, 2, 7, 1415 1, 3, 5, 1516 1, 2, 4, 8, 1617 1, 1718 1, 2, 3, 6, 9, 1819 1, 1920 1, 2, 4, 5, 10, 20
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Prime Numbers• Prime numbers - are those which have
only two factors: 1 and the number itself.
Q: What are the prime numbers up to 20?
A: They are… 2, 3, 5, 7, 11, 13, 17 and 19
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
Prime numbers
On your 1-100 grid, colour in all the prime numbers by looking at the factors of each number.
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
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Monday 1 May 2023Factors, Multiples and Primes
KeywordsFactor, multiple, prime, product, multiply, divide
Lesson Objectives:
Developing students will be able to find factors and multiples of numbers.
Secure students will be able to identify prime numbers.
Excelling students will be able to know prime numbers up to 100.
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Monday 1 May 2023Factors, Multiples and Primes
True or False?77 is a prime number
FALSE - 77 appears in the 7 and 11
times tables.
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Monday 1 May 2023Factors, Multiples and Primes
True or False?2 is a prime number
TRUE - 2 is the only even prime number – it is only divisible by 1 and itself
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Monday 1 May 2023Factors, Multiples and Primes
True or False?17 is NOT a prime
number
FALSE - 17 is a prime number as it is only divisible
by 1 and itself
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Monday 1 May 2023Factors, Multiples and Primes
True or False?37 is a prime number
TRUE - 37 is a prime number as it is only divisible by itself
and 1
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Monday 1 May 2023Factors, Multiples and Primes
True or False?57 is NOT a prime
number
TRUE - 57 is not a prime number as it is divisible by
1, 3, 19 and itself
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Monday 1 May 2023Factors, Multiples and Primes
True or False?99 is NOT a prime
number
TRUE - 1, 3, 9, 11, 33 and 99 are all factors of 99
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Monday 1 May 2023Factors, Multiples and Primes
Activity –From the number cloud write down…a) All the odd numbers (8)
b) All the even numbers (6)
c) All the prime numbers (3)
d) All the square numbers (3)
e) All the cube numbers (3)
f) All the triangular numbers (6)
g) All the multiples of 5 (3)
h) All the multiples of 9 (4)
i) All the factors of 72 (7)
15
8 2441
636
1027
1936
17
55
2
No calculators allowed.
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Monday 1 May 2023Factors, Multiples and Primes
a) All the odd numbers (8) …………
b) All the even numbers (6) ………..
c) All the prime numbers (3) ……...
d) All the square numbers (3) …....
e) All the cube numbers (3) ………..
f) All the triangular numbers (6) ..
g) All the multiples of 5 (3) ………..
h) All the multiples of 9 (4) ………..
i) All the factors of 72 (7) …………..
a) 1, 9, 15, 17, 27, 41, 55, 63
b) 2, 6, 8, 10, 24, 36
c) 2, 17, 41
d) 1, 9, 36
e) 1, 8, 27
f) 1, 6, 10, 15, 36, 55
g) 10, 15, 55
h) 9, 27, 36, 63
i) 1, 2, 6, 8, 9, 24, 36
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Monday 1 May 2023Factors, Multiples and Primes
4 or 16
21
10 or 15
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Monday 1 May 2023Factors, Multiples and Primes
12
14
16