Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 466 · 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 has 5 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 30 (b) 11 (c) 36 (d) not enough info
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
3. 3.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
4. 4.🧩 Arjun bought 6 balls for ₹360 in all. Each ball cost the same. What did one ball cost? (a) ₹360 (b) ₹65 (c) not enough info (d) ₹60
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Tara bought 3 kites and a cap for ₹75 in all. Each kite cost the same. What did one kite cost? (a) ₹72 (b) ₹25 (c) ₹75 (d) not enough info
7. 7.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
8. 8.🧩 Diya is 9 years old. Nisha is 8 years older than Diya. How old is Nisha? (a) 8 (b) not enough info (c) 18 (d) 17
9. 9.🧩 A box has 3 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 8 (b) 15 (c) not enough info (d) 20
10. 10.🧩 Vihaan is 8 years old. Ananya is older than Vihaan. How old is Ananya? (a) 13 (b) 9 (c) not enough info (d) 10
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
14. 14.🧩 A box has 3 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 12 (b) 16 (c) 7 (d) not enough info
15. 15.🧩 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
16. 16.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
17. 17.🧩 Rohan is 8 years old. Saanvi is older than Rohan. How old is Saanvi? (a) 13 (b) 10 (c) 9 (d) not enough info
18. 18.🧩 Ananya is 6 years old. Rohan is older than Ananya. How old is Rohan? (a) 8 (b) 7 (c) 11 (d) not enough info
19. 19.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 45 (c) 13 (d) 36
20. 20.🧩 Ananya bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹30 (c) ₹25 (d) not enough info
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Aarav is 7 years old. Ananya is older than Aarav. How old is Ananya? (a) not enough info (b) 9 (c) 12 (d) 8
25. 25.🧩 Kabir bought 4 markers and a water bottle for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹240 (b) not enough info (c) ₹60 (d) ₹236
26. 26.🧩 Kabir bought 3 kites and a bag for ₹250 in all. Each kite cost the same. What did one kite cost? (a) ₹250 (b) ₹247 (c) ₹83 (d) not enough info
27. 27.🧩 Ishaan bought 3 notebooks for ₹165 in all. Each notebook cost the same. What did one notebook cost? (a) ₹165 (b) ₹60 (c) ₹55 (d) not enough info
28. 28.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Vihaan bought 3 markers and a cap for ₹210 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹210 (c) ₹207 (d) ₹70
31. 31.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
32. 32.🧩 A box has 3 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 11 (b) not enough info (c) 24 (d) 32
33. 33.🧩 Vihaan is 10 years old. Kabir is 7 years older than Vihaan. How old is Kabir? (a) not enough info (b) 17 (c) 7 (d) 18
34. 34.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
35. 35.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
36. 36.🥭 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, it is certain (d) yes, mangoes match
37. 37.🧩 Kabir is 6 years old. Rohan is 6 years older than Kabir. How old is Rohan? (a) 12 (b) not enough info (c) 13 (d) 6
38. 38.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
39. 39.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
40. 40.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 3 PM

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