Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 858 · 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.🧩 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
2. 2.🐕 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
3. 3.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) not enough info (c) 8 (d) 4
4. 4.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
7. 7.🧩 Saanvi bought 3 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹180 (c) ₹60 (d) ₹65
8. 8.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
9. 9.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 5 PM
10. 10.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
11. 11.🧩 Tara bought 3 kites for ₹105 in all. Each kite cost the same. What did one kite cost? (a) ₹105 (b) not enough info (c) ₹40 (d) ₹35
12. 12.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
13. 13.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
15. 15.🧩 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
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
17. 17.🧩 Diya is 9 years old. Rohan is older than Diya. How old is Rohan? (a) 14 (b) not enough info (c) 10 (d) 11
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
20. 20.🥭 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
21. 21.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) not enough info (c) 5 PM (d) 7 PM
22. 22.🧩 Nisha is 11 years old. Ishaan is older than Nisha. How old is Ishaan? (a) 16 (b) not enough info (c) 13 (d) 12
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Rohan bought 2 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) not enough info (c) ₹90 (d) ₹45
25. 25.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
26. 26.🧩 Rohan is 7 years old. Ananya is 3 years older than Rohan. How old is Ananya? (a) not enough info (b) 11 (c) 10 (d) 3
27. 27.🧩 Meera is 6 years old. Tara is 2 years older than Meera. How old is Tara? (a) not enough info (b) 2 (c) 9 (d) 8
28. 28.🧩 Tara bought 5 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) not enough info (c) ₹15 (d) ₹10
29. 29.🧩 Diya is 12 years old. Nisha is 7 years older than Diya. How old is Nisha? (a) 7 (b) 20 (c) not enough info (d) 19
30. 30.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
31. 31.🧩 Ishaan is 10 years old. Tara is 4 years older than Ishaan. How old is Tara? (a) not enough info (b) 15 (c) 4 (d) 14
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Vihaan is 12 years old. Diya is 8 years older than Vihaan. How old is Diya? (a) not enough info (b) 8 (c) 20 (d) 21
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
35. 35.🧩 Aarav is 10 years old. Rohan is 7 years older than Aarav. How old is Rohan? (a) 17 (b) 18 (c) not enough info (d) 7
36. 36.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
37. 37.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
40. 40.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence

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