Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 283 · 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.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
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
4. 4.🧩 Vihaan bought 5 balls for ₹225 in all. Each ball cost the same. What did one ball cost? (a) ₹225 (b) ₹50 (c) ₹45 (d) not enough info
5. 5.🧩 Nisha bought 4 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹25 (c) ₹100 (d) ₹30
6. 6.🧩 Ananya is 10 years old. Diya is older than Ananya. How old is Diya? (a) 11 (b) 15 (c) not enough info (d) 12
7. 7.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 7 PM
8. 8.🧩 A box has 6 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 49 (b) 13 (c) 42 (d) not enough info
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
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.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
12. 12.🧩 Ananya bought 5 notebooks and a bag for ₹205 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹41 (c) ₹205 (d) ₹200
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Rohan is 8 years old. Ananya is older than Rohan. How old is Ananya? (a) not enough info (b) 9 (c) 13 (d) 10
15. 15.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 63 (b) 72 (c) not enough info (d) 16
16. 16.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
17. 17.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
20. 20.🧩 Ananya bought 4 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) not enough info (c) ₹120 (d) ₹30
21. 21.🧩 Kabir bought 6 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹300 (c) ₹50 (d) ₹55
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
23. 23.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
25. 25.🥭 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) no mango is sweet (c) yes, mangoes match (d) no, check more
26. 26.🧩 Ishaan bought 6 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹45 (c) ₹240 (d) ₹40
27. 27.🧩 Aarav is 11 years old. Tara is older than Aarav. How old is Tara? (a) 12 (b) not enough info (c) 16 (d) 13
28. 28.🧩 A box has 5 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 14 (b) 45 (c) 54 (d) not enough info
29. 29.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
33. 33.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 2 PM
34. 34.🧩 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
35. 35.🧩 Nisha bought 5 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) ₹65 (b) ₹300 (c) not enough info (d) ₹60
36. 36.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 5 (b) not enough info (c) 10 (d) 50
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Aarav is 6 years old. Rohan is older than Aarav. How old is Rohan? (a) not enough info (b) 7 (c) 8 (d) 11

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