Ex 3.1, 3 Match the items in column 1 with the items in column 2. Multiples of 8 are
8, 16, 24, 32, 40, 48….
Multiples of 7 are
7, 14, 21, 28, 35, 42….
Multiples of 70 are
70, 140, 210, 280, 350, 420….
Factors of 30 are
1 × 30 = 30
2 × 15 = 30
3 × 10 = 30
4 ×
5 × 6 = 30
6 × 5 = 30
We stop here as 5 & 6 have occurred earlier.
∴ Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30
Factors of 50 are
1 × 50 = 50
2 × 25 = 50
3 ×
4 ×
5 × 10 = 50
…
10 × 5 = 50
We stop here as 10 & 5 have occurred earlier.
∴ Factors of 50 are 1, 2, 5, 10, 25, 50
Factors of 20 are
1 × 20 = 20
2 × 10 = 20
3 ×
4 × 5 = 20
5 × 4 = 20
We stop here as 5 & 4 have occurred earlier.
∴ Factors of 20 are 1, 2, 4, 5, 10, 20
Multiples of 8 are 8, 16, 24, 32, 40, 48….
Multiples of 7 are 7, 14, 21, 28, 35, 42….
Multiples of 70 are 70, 140, 210, 280, 350, 420….
Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30
Factors of 50 are 1, 2, 5, 10, 25, 50
Factors of 20 are 1, 2, 4, 5, 10, 20
Made by
Davneet Singh
Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo
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