Rd sharma solutions

Rd sharma solutions

Grade 6

Playing with numbers | Playing with numbers Exercise 2.2

Question 2

Find the common factors of:

(i) 5, 15 and 25

(ii) 2, 6 and 8

(i) 5, 15 and 25

We know that

For 5

1 × 5 = 5

Factors of 5 are 1 and 5

For 15

1 × 15 = 15

3 × 5 = 15

Factors of 15 are 1, 3, 5 and 15

For 25

1 × 25 = 25

5 × 5 = 25

Factors of 25 are 1, 5 and 25

Therefore, the common factors of 5, 15 and 25 are 1 and 5.

(ii) 2, 6 and 8

We know that

For 2

1 × 2 = 2

Factors of 2 are 1 and 2

For 6

1 × 6 = 6

2 × 3 = 6

Factors of 6 are 1, 2, 3 and 6

For 8

1 × 8 = 8

2 × 4 = 8

Factors of 8 are 1, 2, 4 and 8

Therefore, the common factors of 2, 6 and 8 are 1 and 2.

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Question 2

Find the common factors of:

(i) 5, 15 and 25

(ii) 2, 6 and 8

(i) 5, 15 and 25

We know that

For 5

1 × 5 = 5

Factors of 5 are 1 and 5

For 15

1 × 15 = 15

3 × 5 = 15

Factors of 15 are 1, 3, 5 and 15

For 25

1 × 25 = 25

5 × 5 = 25

Factors of 25 are 1, 5 and 25

Therefore, the common factors of 5, 15 and 25 are 1 and 5.

(ii) 2, 6 and 8

We know that

For 2

1 × 2 = 2

Factors of 2 are 1 and 2

For 6

1 × 6 = 6

2 × 3 = 6

Factors of 6 are 1, 2, 3 and 6

For 8

1 × 8 = 8

2 × 4 = 8

Factors of 8 are 1, 2, 4 and 8

Therefore, the common factors of 2, 6 and 8 are 1 and 2.

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