Be My Multiple I Will Be Your Factor Practice Problems | CBSE Class 5 Maths

CLASS 5 Mathematics PRACTICE PROBLEMS

Textbook solutions of this chapter can be found here.

Given below are practice problems that students can try at home to improve their understanding of this lesson.

Be My Multiple, I’ll be your factor

1. Find all the factors of 18.

2. Write first five multiples of 8.

3. Find out the Least Common Multiple of 4 and 6.

4. Write the common factors and HCF of the following number: 8 and 12

5. Write the prime numbers between 1 and 20.

6. Write the composite numbers between 1 and 20.

7. Three bulbs glow at regular intervals of 6, 8 and 12 seconds. When will they glow together?

8. Write the common factors of 36 and 24. Which is the smallest among them?

9. Find first three common multiples of 6 and 8.

10. Find the HCF of 12, 16 and 18.

Answers:

1. Factor pairs are 1x 18, 2×9, and 3×6.

Therefore, factors of 18 are 1, 2, 3, 6, 9 and 18.

2. First five multiples of 8 are 8, 16, 24, 32, and 40.

3. To find the LCM of 4 and 6, we need the multiples of 4 and 6.

Multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36…………
Multiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48………………..
Common Multiples are 12, 24, 36 ……………..
LCM = 12

4. Factor pairs of 8 are 1 x 8, 2×4

Factors of 8 are 1, 2, 4 and 8.
Factor pairs of 12 are 1 x 12, 2×6, and 3×4.
Factors of 12 are 1, 2, 3, 4, 6 and 12.
Common Factors are 1, 2 and 4.
HCF = 4

5. Prime numbers between 1 and 20 are 2, 3, 5, 7, 11, 13, 17 and 19.

6. Composite numbers between 1 and 20 are 4, 6, 8, 9, 10, 12, 14, 15, 16 and 18.

7. Here we need to find out the LCM of 6, 8 and 12.

Multiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72……………….
Multiples of 8 are 8, 16, 24, 32, 40, 48, 56, 64, 72…………………
Multiples of 12 are 12, 24, 36, 48, 60, 72………………….
Common Multiples are 24, 48, 72……………………….
LCM =24

8. Factor pairs of 36 are 1 x 36, 2 x18, 3 x 12, 4 x 9, and 6×6.

Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18 and 36.
Factor pairs of 24 are 1 x 24, 2 x12, 3 x 8, and 4x 6.
Factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24.
Common Factors are 1, 2, 3, 4, 6 and 12
Smallest among them is 1.

9. Multiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72………………

Multiples of 8 are 8, 16, 24, 32, 40, 48, 56, 64, 72…………………..
First three common multiples are 24, 48, and 72.

10. Factor pairs of 12 are 1x 12, 2×6, and 3 x 4.

Factor pairs of 16 are 1 x16, 2x 8, and 4 x 4.
Factor pairs of 18 are 1x 18, 2×9, and 3 x 6.
Factors of 12 are 1, 2, 3, 4, 6 and 12.
Factors of 16 are 1, 2, 4, 8 and 16.
Factors of 18 are 1, 2, 3, 6, 9 and 18.
Common Factors are 1 and 2.
HCF = 2

More practice problems for the chapter Be my multiple I will be your factor can be found here.