Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 384 · 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 8 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 56 (b) 63 (c) not enough info (d) 15
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
4. 4.🧩 Arjun bought 2 mangoes and a cap for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹130 (b) ₹128 (c) ₹65 (d) not enough info
5. 5.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
6. 6.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
7. 7.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
8. 8.🧩 Ananya is 9 years old. Diya is older than Ananya. How old is Diya? (a) 11 (b) 14 (c) not enough info (d) 10
9. 9.🧩 Nisha is 9 years old. Meera is 3 years older than Nisha. How old is Meera? (a) not enough info (b) 3 (c) 12 (d) 13
10. 10.🧩 Nisha is 12 years old. Ishaan is 3 years older than Nisha. How old is Ishaan? (a) 15 (b) 3 (c) not enough info (d) 16
11. 11.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
12. 12.🧩 Kabir bought 3 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹90 (c) not enough info (d) ₹30
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Vihaan is 6 years old. Ananya is older than Vihaan. How old is Ananya? (a) not enough info (b) 7 (c) 8 (d) 11
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
16. 16.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
19. 19.🧩 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
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
21. 21.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) 11 (b) 32 (c) 28 (d) not enough info
22. 22.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 4 PM
23. 23.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
24. 24.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
25. 25.🧩 Nisha is 7 years old. Aarav is older than Nisha. How old is Aarav? (a) not enough info (b) 12 (c) 9 (d) 8
26. 26.🧩 A box has 5 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 10 (b) 30 (c) 25 (d) not enough info
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Rohan bought 2 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) not enough info (c) ₹60 (d) ₹35
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
30. 30.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) not enough info (d) 4 PM
31. 31.🧩 Meera bought 6 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹10 (c) ₹60 (d) ₹15
32. 32.🧩 Ananya bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) ₹25 (c) not enough info (d) ₹20
33. 33.🧩 Ananya bought 3 notebooks and a bag for ₹155 in all. Each notebook cost the same. What did one notebook cost? (a) ₹152 (b) ₹155 (c) not enough info (d) ₹51
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
35. 35.🧩 Rohan is 7 years old. Vihaan is 4 years older than Rohan. How old is Vihaan? (a) 4 (b) not enough info (c) 11 (d) 12
36. 36.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
37. 37.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 32 (b) 12 (c) not enough info (d) 36
38. 38.🧩 Kabir bought 3 pens for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹55 (c) ₹165 (d) not enough info
39. 39.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
40. 40.🧩 Aarav is 7 years old. Rohan is older than Aarav. How old is Rohan? (a) 8 (b) 12 (c) 9 (d) not enough info

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