Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 18 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.🧩 Kabir is 9 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 14 (b) not enough info (c) 11 (d) 10
2. 2.🧩 Ananya is 7 years old. Kabir is 3 years older than Ananya. How old is Kabir? (a) 11 (b) not enough info (c) 3 (d) 10
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Ananya bought 6 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) not enough info (c) ₹55 (d) ₹300
5. 5.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 5 PM
6. 6.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
7. 7.🧩 Ananya is 6 years old. Vihaan is 6 years older than Ananya. How old is Vihaan? (a) 13 (b) not enough info (c) 6 (d) 12
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Kabir bought 6 notebooks for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) not enough info (c) ₹40 (d) ₹210
10. 10.🧩 Kabir bought 4 kites and a cap for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹140 (c) not enough info (d) ₹136
11. 11.🧩 Nisha bought 4 pens and a water bottle for ₹130 in all. Each pen cost the same. What did one pen cost? (a) ₹126 (b) not enough info (c) ₹130 (d) ₹32
12. 12.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
13. 13.🧩 Tara bought 4 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹60 (c) ₹20 (d) not enough info
14. 14.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 4 PM (d) 8 PM
15. 15.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
16. 16.🧩 A box has 5 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 48 (b) 13 (c) not enough info (d) 40
17. 17.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
22. 22.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
23. 23.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
24. 24.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
26. 26.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 35 (b) 28 (c) not enough info (d) 11
27. 27.🧩 Ishaan is 6 years old. Aarav is older than Ishaan. How old is Aarav? (a) 8 (b) 7 (c) not enough info (d) 11
28. 28.🧩 Diya is 8 years old. Kabir is 5 years older than Diya. How old is Kabir? (a) not enough info (b) 13 (c) 14 (d) 5
29. 29.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) 5 (c) not enough info (d) 50
30. 30.🧩 Rohan bought 5 kites and a lunch box for ₹145 in all. Each kite cost the same. What did one kite cost? (a) ₹29 (b) ₹145 (c) ₹140 (d) not enough info
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
32. 32.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
33. 33.🧩 A box has 4 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 40 (d) 32
34. 34.🧩 Aarav is 6 years old. Arjun is 5 years older than Aarav. How old is Arjun? (a) not enough info (b) 11 (c) 12 (d) 5
35. 35.🧩 Ishaan is 9 years old. Nisha is older than Ishaan. How old is Nisha? (a) 11 (b) 10 (c) not enough info (d) 14
36. 36.🧩 Saanvi bought 3 markers for ₹45 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹20 (c) not enough info (d) ₹15
37. 37.🧩 Diya is 7 years old. Vihaan is 3 years older than Diya. How old is Vihaan? (a) 3 (b) 11 (c) 10 (d) not enough info
38. 38.🧩 A box has 5 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 25 (c) 10 (d) not enough info
39. 39.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
40. 40.🧩 Ananya is 12 years old. Rohan is older than Ananya. How old is Rohan? (a) 17 (b) not enough info (c) 13 (d) 14

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