Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 587 · 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 mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
2. 2.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
4. 4.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 7 PM
5. 5.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
6. 6.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
8. 8.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 42 (c) 13 (d) 48
9. 9.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 6 PM
10. 10.🧩 Vihaan bought 5 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹45 (c) ₹200 (d) not enough info
11. 11.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) not enough info (b) 18 (c) 9 (d) 90
12. 12.🧩 Vihaan is 6 years old. Kabir is 5 years older than Vihaan. How old is Kabir? (a) 12 (b) 11 (c) 5 (d) not enough info
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
15. 15.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 10 (b) 21 (c) 28 (d) not enough info
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
17. 17.🧩 A box has 8 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 45 (b) 13 (c) not enough info (d) 40
18. 18.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
19. 19.🧩 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
20. 20.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 3 PM
21. 21.🧩 Aarav bought 2 mangoes and a bag for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹128 (b) not enough info (c) ₹130 (d) ₹65
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
24. 24.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
25. 25.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
26. 26.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
28. 28.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 49 (d) 56
29. 29.🧩 Tara is 9 years old. Diya is older than Tara. How old is Diya? (a) not enough info (b) 11 (c) 10 (d) 14
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Ananya bought 2 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) not enough info (c) ₹50 (d) ₹45
32. 32.🧩 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
33. 33.🧩 Nisha is 7 years old. Saanvi is 3 years older than Nisha. How old is Saanvi? (a) not enough info (b) 3 (c) 10 (d) 11
34. 34.🧩 Ishaan bought 4 pens and a cap for ₹260 in all. Each pen cost the same. What did one pen cost? (a) ₹260 (b) ₹256 (c) not enough info (d) ₹65
35. 35.🧩 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
36. 36.🧩 Rohan bought 4 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) ₹55 (c) not enough info (d) ₹50
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
38. 38.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) not enough info (c) 14 (d) 7
39. 39.🥭 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) yes, it is certain (c) no, check more (d) yes, mangoes match
40. 40.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 80 (d) 8

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