Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 540 · 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.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
2. 2.🧩 Tara bought 4 kites and a lunch box for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹196 (b) not enough info (c) ₹200 (d) ₹50
3. 3.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
4. 4.🧩 Vihaan bought 3 notebooks for ₹105 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹35 (c) not enough info (d) ₹105
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
7. 7.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 8 PM (d) 5 PM
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Aarav bought 4 pens and a water bottle for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹116 (d) ₹120
10. 10.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Ananya is 10 years old. Kabir is older than Ananya. How old is Kabir? (a) 15 (b) not enough info (c) 12 (d) 11
12. 12.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
13. 13.🧩 A box has 3 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 9 (c) 24 (d) 18
14. 14.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Meera bought 3 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹180 (b) ₹65 (c) ₹60 (d) not enough info
16. 16.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
17. 17.🧩 Ananya bought 5 mangoes for ₹225 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹225 (c) ₹50 (d) ₹45
18. 18.🧩 Diya bought 6 pens for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹210 (b) not enough info (c) ₹35 (d) ₹40
19. 19.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
20. 20.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 28 (b) not enough info (c) 21 (d) 10
21. 21.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
22. 22.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
23. 23.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
24. 24.🧩 Vihaan is 6 years old. Arjun is older than Vihaan. How old is Arjun? (a) 8 (b) 7 (c) not enough info (d) 11
25. 25.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
26. 26.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 49 (c) 56 (d) 14
27. 27.🧩 Diya bought 4 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹120 (b) ₹35 (c) not enough info (d) ₹30
28. 28.🧩 Saanvi bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹60 (c) ₹30 (d) not enough info
29. 29.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, mangoes match (d) yes, it is certain
30. 30.🧩 Diya is 12 years old. Arjun is 2 years older than Diya. How old is Arjun? (a) 15 (b) not enough info (c) 2 (d) 14
31. 31.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) 36 (b) 42 (c) 12 (d) not enough info
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Saanvi is 9 years old. Kabir is 8 years older than Saanvi. How old is Kabir? (a) 18 (b) 8 (c) not enough info (d) 17
35. 35.🧩 Nisha is 8 years old. Saanvi is older than Nisha. How old is Saanvi? (a) not enough info (b) 10 (c) 9 (d) 13
36. 36.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
38. 38.🧩 Meera bought 5 kites and a lunch box for ₹360 in all. Each kite cost the same. What did one kite cost? (a) ₹360 (b) ₹72 (c) not enough info (d) ₹355
39. 39.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet

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