Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 122 · 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.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
2. 2.🥭 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
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
6. 6.🧩 Saanvi is 8 years old. Arjun is older than Saanvi. How old is Arjun? (a) 10 (b) not enough info (c) 13 (d) 9
7. 7.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 13 (c) 42 (d) 48
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
9. 9.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 5 PM
10. 10.🧩 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
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
12. 12.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Arjun is 7 years old. Ishaan is older than Arjun. How old is Ishaan? (a) not enough info (b) 12 (c) 8 (d) 9
15. 15.🧩 Nisha is 6 years old. Diya is older than Nisha. How old is Diya? (a) 7 (b) 11 (c) 8 (d) not enough info
16. 16.🧩 Tara bought 4 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹20 (c) not enough info (d) ₹15
17. 17.🧩 Vihaan is 11 years old. Rohan is 5 years older than Vihaan. How old is Rohan? (a) 17 (b) 5 (c) not enough info (d) 16
18. 18.🧩 Ishaan is 7 years old. Aarav is 9 years older than Ishaan. How old is Aarav? (a) 16 (b) not enough info (c) 9 (d) 17
19. 19.🧩 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
20. 20.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
21. 21.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
22. 22.🧩 Vihaan bought 3 pens and a cap for ₹115 in all. Each pen cost the same. What did one pen cost? (a) ₹112 (b) ₹115 (c) ₹38 (d) not enough info
23. 23.🧩 Ananya bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) ₹55 (c) not enough info (d) ₹50
24. 24.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
27. 27.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 9 PM (c) 6 PM (d) 8 PM
28. 28.🧩 Saanvi bought 6 kites and a water bottle for ₹430 in all. Each kite cost the same. What did one kite cost? (a) ₹430 (b) ₹424 (c) not enough info (d) ₹71
29. 29.🧩 Diya bought 5 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹75 (c) ₹15 (d) ₹20
30. 30.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 54 (b) not enough info (c) 15 (d) 63
31. 31.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
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.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 2 PM
34. 34.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
35. 35.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Rohan bought 3 pens and a water bottle for ₹195 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹192 (c) not enough info (d) ₹195
37. 37.🧩 Rohan is 11 years old. Diya is 9 years older than Rohan. How old is Diya? (a) 9 (b) 20 (c) 21 (d) not enough info
38. 38.🧩 Ananya bought 5 markers and a bag for ₹320 in all. Each marker cost the same. What did one marker cost? (a) ₹64 (b) ₹320 (c) ₹315 (d) not enough info
39. 39.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
40. 40.🧩 Kabir is 11 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 13 (b) 12 (c) 16 (d) not enough info

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