Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 884 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
2. 2.🧩 A box has 6 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 56 (b) not enough info (c) 14 (d) 48
3. 3.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
4. 4.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
5. 5.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
6. 6.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
7. 7.🧩 Diya bought 5 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹20 (c) ₹75 (d) not enough info
8. 8.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 5 PM
9. 9.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 9 PM
10. 10.🧩 Saanvi bought 3 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹40 (c) ₹120 (d) ₹45
11. 11.🧩 Rohan is 6 years old. Ishaan is older than Rohan. How old is Ishaan? (a) not enough info (b) 8 (c) 11 (d) 7
12. 12.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) 6 PM (d) not enough info
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Aarav is 11 years old. Ishaan is 3 years older than Aarav. How old is Ishaan? (a) 15 (b) 3 (c) 14 (d) not enough info
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
16. 16.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
17. 17.🧩 Nisha bought 3 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹40 (c) ₹120 (d) ₹45
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
19. 19.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
20. 20.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Rohan bought 4 balls and a bag for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹106 (b) ₹110 (c) ₹27 (d) not enough info
22. 22.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
23. 23.🐕 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
24. 24.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
28. 28.🧩 Rohan is 9 years old. Saanvi is older than Rohan. How old is Saanvi? (a) 10 (b) 11 (c) 14 (d) not enough info
29. 29.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) 4 PM (d) not enough info
30. 30.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
31. 31.🧩 Rohan bought 2 kites for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹80 (b) not enough info (c) ₹45 (d) ₹40
32. 32.🥭 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, check more (c) yes, mangoes match (d) no mango is sweet
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Tara is 6 years old. Vihaan is 7 years older than Tara. How old is Vihaan? (a) 13 (b) not enough info (c) 7 (d) 14
35. 35.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
36. 36.🧩 Saanvi is 8 years old. Rohan is older than Saanvi. How old is Rohan? (a) not enough info (b) 9 (c) 10 (d) 13
37. 37.🧩 Nisha is 7 years old. Ananya is 6 years older than Nisha. How old is Ananya? (a) not enough info (b) 6 (c) 13 (d) 14
38. 38.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 80 (b) not enough info (c) 8 (d) 16
39. 39.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) 7 PM (d) not enough info
40. 40.🧩 Tara bought 5 balls and a cap for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹270 (b) ₹265 (c) ₹54 (d) not enough info

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