Class 2 Maths Joyful Mathematics - Fun with Numbers - CBSE Worksheet Solutions

Q1: Look at the numbers. Write the rule describing each.
(i) 12, 15, 18, 21, 24, 27, 30, 33
Ans: Start at 12. Add 3 each time.

(ii) 45, 40, 35, 30, 25, 20, 15, 10
Ans: Start at 45. Subtract 5 each time.

(iii) 6, 8, 10, 12, 14, 16, 18, 20
Ans: Start at 6. Add 2 each time.

(iv) 20, 30, 40, 50, 60, 70, 80, 90
Ans: Start at 20. Add 10 each time.

(v) 56, 49, 42, 35, 28, 21, 14, 7
Ans: Start at 56. Subtract 7 each time.

(vi) 11, 22, 33, 44, 55, 66, 77, 88
Ans: Start at 11. Add 11 each time.

(vii) 81, 72, 63, 54, 45, 36, 27, 18
Ans: Start at 81. Subtract 9 each time.

(viii) 15, 19, 23, 27, 31, 35, 39, 43
Ans: Start at 15. Add 4 each time.

(ix) 65, 62, 59, 56, 53, 50, 47, 44
Ans: Start at 65. Subtract 3 each time.

Q2: Describe the series followed by the hops in each number line.
(i)
Ans: Start at 48. Add 12 each time.

(ii)
Ans: Start at –19. Add 4 each time.

(iii)
Ans: Start at 80. Subtract 10 each time.

(iv)
Ans: Start at 6. Subtract 18 each time.

(v)
Ans: Start at –10. Add 2 each time.

(vi)
Ans: Start at 73. Subtract 8 each time.

Q3: Identify the number sequence and fill in the missing numbers.
(i) 

Ans: 23, 30, 38, 47, 57

(ii) 

Ans: 14, 7, -1, -10, -20

(iii) 

Ans: 50, 45, 41, 38, 36

(iv) 

Ans: -16, -12, -9, -7, -6

(v) 

Ans: 36, 44, 53, 63, 74

(vi) 

Ans: 12, 13, 25, 33, 42