Factor & Multiples
32
2 is a 2 is a factor factor of 10 of 10
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Transcript of Factor & Multiples
2 is a2 is a factor of 10factor of 10
No remainder leftNo remainder left
10 ÷ 5 = 210 ÷ 5 = 2
No remainder left
10 ÷ 310 ÷ 3
10 ÷ 310 ÷ 3 No !
3 is3 is NOT a factor of NOT a factor of 1010
10 ÷ 410 ÷ 4
4 is4 is NOT a factor of 10NOT a factor of 10
10 ÷ 210 ÷ 2
10 ÷ 2 = 510 ÷ 2 = 5
No remainder left
5 is5 is a factor of 10a factor of 10
10 ÷ 5 = 210 ÷ 5 = 2
10 ÷ 2 = 510 ÷ 2 = 5
10 ÷ 1 = 1010 ÷ 1 = 10
10 ÷ 10 = 110 ÷ 10 = 1
Factors of 10Factors of 10 ::
1, 2, 5 and 10
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
16 17 18 19 20
Find all the factors of 14
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
16 17 18 19 20
Factors of 14Factors of 14 ::
1, 2, 7 and 14
1 x 32 = 321 x 32 = 32
2 x 16 = 322 x 16 = 32
4 x 8 = 324 x 8 = 32
11 xx 3232 = 32= 32
22 xx 1616 = 32= 32
44 xx 88 = 32= 32
Factors of 32Factors of 32 ::
1, 2, 4, 8, 16, 32.
Factors of 10Factors of 10 : 1, 2, 5, 10: 1, 2, 5, 10
Factors of 14Factors of 14 : 1, 2, 7, 14 : 1, 2, 7, 14
Factors of 32Factors of 32 : 1, 2, 4, 8, 16, 32 : 1, 2, 4, 8, 16, 32
Factors of 10Factors of 10 : : 11, , 22, 5, 10, 5, 10
Factors of 14Factors of 14 : : 11, , 22, 7, 14, 7, 14
Factors of 32Factors of 32 : : 11, , 22,, 4, 8, 16, 324, 8, 16, 32
Common FactorsCommon Factors
11 is a factor of all whole is a factor of all whole numbers.numbers.
The number itself is a also a factor.
1 x 5 = 5
2 x 5 = 10
3 x 5 = 15
4 x 5 = 20
5 x 5 = 25
6 x 5 = 30
7 x 5 = 35
8 x 5 = 40
9 x 5 = 45
10 x 5 = 50
11 x 5 = 55
12 x 5 = 60
1 x 5 = 5
2 x 5 = 10
3 x 5 = 15
4 x 5 = 20
5 x 5 = 25
6 x 5 = 30
7 x 5 = 35
8 x 5 = 40
9 x 5 = 45
10 x 5 = 50
11 x 5 = 55
12 x 5 = 60
5, 10, 15, 20, 25…5, 10, 15, 20, 25…
Multiples of 5Multiples of 5
Multiples of 3 : 3, 6, 9, 12, 15Multiples of 3 : 3, 6, 9, 12, 15
Multiples of 6 : 6, 12, 18, 24, 30Multiples of 6 : 6, 12, 18, 24, 30
Multiples of 3Multiples of 3 : 3, : 3, 66, 9, , 9, 1212, 15, , 15, 1818
Multiples of 6Multiples of 6 : : 66, , 1212, , 1818, 24, 30, 24, 30
Common Common MultiplesMultiples
What’s my What’s my Number ?Number ?
Rules of the GameRules of the Game
1. Work in pairs.2. Think of a number between 1 and 303. Tell your partner all the factors of that
number but NOT the number itself.4. Ask your partner to guess the number.
He gets a point if he guesses the correct number within 2 tries. If not, you get the point.
