NCERT Solutions Class 3 Mathematics Chapter 2 Fun with numbers

1. Radhika, Gauri, Vicky, Indre ans Sunil were collecting Imli (tamarind) seeds:
Ans. · Indra collected the most seeds. ·
Sunil will collect 4 more seeds to be equal to Vicky. ·
If Radhika gets 6 more seeds, she will have 30. ·
How many children have more than 40 seeds? 3 ·
Gauri needs 3 more seeds to have 50. ·
Sunil has 2 seeds less than 40 and Vicky has 2 seeds more than 40.

2. Dhoni’s Century One-day match between India and South Africa in Guwahati….., India batting first….. Fill in the blanks:
Ans. Dhoni Scored 96 +6 =102 runs.

3. How many runs do these players need to complete a century?

4. Fill in the blanks:
Ans.

5. Oh! 206! Guess how many more to make a triple century?
Ans. To make ripple century, runs needed = 300 – 206 = 94

6. Top Ten Scores in the Cricket World Cup
Ans.

C.K. Just missed his century. How many runs did he need to make a century? 1
· A.S. and C.K. scored almost equal runs.
· Most runs scored by any batsman are 178.
· A.S. and C.K. have a difference of just 1 run between them.
· K.S.P. scored 2 more than one and a half century.

8. How far can you go like this?
Ans. I can go endlessly as there is no end to the numbers.

9. What is the biggest number you can call out?
Ans. The biggest number can never be called as there is no biggest number.

10. Colour the Numbers. Find these numbers in the above chart. Colour them.

Ans.

Gabru, Bunny and Tarru are jumping all the way.
Gabru jumps on every 7 th square, Bunny on every 5 th square, Tarru on every 4 th square.
Gabru starts jumping from square number 90. Bunny starts jumping from square number 99.
Tarru starts jumping from square number 106.
Bunny’s tenth jump is on square number 149. Tarru’s tenth is on square number 146. Garbru’s tenth jump will be on square number 160. Gabru and Bunny both jump on squares 104, 139 and 174.

11. Find out:

(a) Tarru and Bunny jump on squares ____, _____, _____ and _____.
Ans. (a) 114, 134, 154 and 174.

(b) Is there any square where all three of them jump?
Ans.(b) 174.

(c) Guess how will finish in the least jumps?
Ans.(c) Gabru.

(d) In how many jumps?
Ans.(d) 12.

12. (a) Jump 2 steps forward: 104, 106, 108.
Ans. (a) 104, 106, 108, 110, 112, 114, 116.

(b) Jumps 2 steps backward: 262, 260, 258.
Ans. (b) 262, 260, 258, 256, 254, 252, 250.

(c) Jumps 10 steps forward: 110, 120, 130.
Ans. (c) 110, 120, 130, 140, 150, 160, 170.

(d) Jumps 10 steps backward: 200, 190, 180.
Ans. (d) 200, 190, 180, 170, 160, 150, 140.

(e) Continue the pattern:
550, 560, 570.
910, 920, 930, 940.
209, 207, 205.
401, 402, 403.
Ans. (e) 550, 560, 570, 580, 590, 600, 610
910, 9920, 930, 940, 950, 960, 970, 980
209, 207, 205, 203, 201, 199, 1997
401, 402, 403, 404, 405, 406, 407.

13. Lazy Crazy also has a crazy way of taking money. He takes only in Rs. 100, Rs. 10 and Rs. 1 coins.
Ans.

14. Who am I? Match with the number.

(a) I come between 40 and 50 and there is 5 in my name.
Ans. (a) 45.

(b) I have 9 in my name and am very close to 90.
Ans. (b) 89.

(c) If you hit a 4 after me, you score a century.
Ans. (c) 96.

(d) I am equal to ten notes of 10. 
Ans. (d) 100.

(e) I am century + half century.
Ans. (e) 150.

(f) I am exactly in between 77 and 97.
Ans. (f) 87.

15. How many are these?

(a)

Ans. (a) 240 rupees.

(b)

Ans. (b) 319 sticks.

(c)

Ans. (c) 212 blocks.

(d)

Ans. (d) 138 beads.

(e)

Ans. (e) 320 rupees.