Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 239 · 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.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 6 PM
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
3. 3.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
6. 6.🧩 Nisha is 7 years old. Saanvi is 4 years older than Nisha. How old is Saanvi? (a) 11 (b) 12 (c) not enough info (d) 4
7. 7.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
10. 10.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
11. 11.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
14. 14.🥭 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) no, check more (d) yes, mangoes match
15. 15.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
16. 16.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
17. 17.🧩 A box has 7 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 14 (c) 49 (d) 56
18. 18.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
21. 21.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
22. 22.🧩 Vihaan is 11 years old. Saanvi is 6 years older than Vihaan. How old is Saanvi? (a) not enough info (b) 17 (c) 18 (d) 6
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) not enough info (b) 16 (c) 8 (d) 80
28. 28.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Tara is 10 years old. Arjun is 2 years older than Tara. How old is Arjun? (a) 12 (b) 13 (c) 2 (d) not enough info
30. 30.🧩 A box has 6 rows of apples, with 9 in each row. How many apples are in the box? (a) 15 (b) 63 (c) 54 (d) not enough info
31. 31.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 9 PM
32. 32.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
33. 33.🧩 Diya bought 2 markers and a cap for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹130 (c) ₹128 (d) not enough info
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.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
36. 36.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
37. 37.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) not enough info (d) 6 PM
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
39. 39.🧩 Rohan bought 5 mangoes and a lunch box for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹36 (b) ₹175 (c) ₹180 (d) not enough info
40. 40.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence

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