Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 885 · 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.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
2. 2.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
3. 3.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
4. 4.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
5. 5.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 3 PM (d) 6 PM
6. 6.🧩 Rohan bought 6 pens and a water bottle for ₹360 in all. Each pen cost the same. What did one pen cost? (a) ₹354 (b) ₹360 (c) ₹60 (d) not enough info
7. 7.🧩 Ishaan is 9 years old. Kabir is 7 years older than Ishaan. How old is Kabir? (a) 17 (b) 7 (c) not enough info (d) 16
8. 8.🧩 Rohan bought 6 mangoes and a cap for ₹330 in all. Each mango cost the same. What did one mango cost? (a) ₹330 (b) ₹55 (c) ₹324 (d) not enough info
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Aarav bought 2 balls for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹55 (d) ₹110
11. 11.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
12. 12.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
13. 13.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
14. 14.🧩 Ishaan is 6 years old. Kabir is 8 years older than Ishaan. How old is Kabir? (a) 15 (b) 8 (c) 14 (d) not enough info
15. 15.🧩 Rohan is 6 years old. Arjun is 7 years older than Rohan. How old is Arjun? (a) not enough info (b) 7 (c) 13 (d) 14
16. 16.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 9 PM (c) 6 PM (d) 8 PM
17. 17.🧩 A box has 7 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 15 (b) not enough info (c) 56 (d) 64
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Tara is 7 years old. Ishaan is 7 years older than Tara. How old is Ishaan? (a) 14 (b) not enough info (c) 7 (d) 15
20. 20.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
21. 21.🧩 Vihaan is 9 years old. Kabir is 4 years older than Vihaan. How old is Kabir? (a) not enough info (b) 4 (c) 13 (d) 14
22. 22.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
23. 23.🧩 Kabir bought 4 markers and a bag for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹296 (b) ₹75 (c) not enough info (d) ₹300
24. 24.🧩 Rohan bought 6 kites and a bag for ₹400 in all. Each kite cost the same. What did one kite cost? (a) ₹400 (b) not enough info (c) ₹394 (d) ₹66
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
26. 26.🧩 Vihaan is 11 years old. Kabir is 2 years older than Vihaan. How old is Kabir? (a) 2 (b) 14 (c) 13 (d) not enough info
27. 27.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
28. 28.🧩 Saanvi bought 3 notebooks and a water bottle for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹130 (b) ₹127 (c) not enough info (d) ₹43
29. 29.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
30. 30.🧩 Meera is 9 years old. Rohan is 2 years older than Meera. How old is Rohan? (a) 2 (b) 12 (c) not enough info (d) 11
31. 31.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
32. 32.🧩 Diya is 6 years old. Kabir is older than Diya. How old is Kabir? (a) 11 (b) 7 (c) not enough info (d) 8
33. 33.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
36. 36.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 9 PM
37. 37.🧩 Ananya is 8 years old. Aarav is 7 years older than Ananya. How old is Aarav? (a) not enough info (b) 15 (c) 16 (d) 7
38. 38.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 7 (c) 14 (d) 70
39. 39.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True

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