Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 227 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
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, check more (b) yes, it is certain (c) yes, mangoes match (d) no mango is sweet
3. 3.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
7. 7.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
11. 11.🧩 Vihaan 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
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
13. 13.🧩 Kabir is 7 years old. Meera is older than Kabir. How old is Meera? (a) 9 (b) 12 (c) 8 (d) not enough info
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Kabir bought 5 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹20 (c) ₹100 (d) ₹25
16. 16.🧩 Meera bought 2 kites and a bag for ₹190 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹95 (c) ₹188 (d) ₹190
17. 17.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
18. 18.🧩 Kabir bought 4 pens and a lunch box for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) ₹116 (c) not enough info (d) ₹30
19. 19.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
21. 21.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
22. 22.🧩 Rohan is 11 years old. Ishaan is 5 years older than Rohan. How old is Ishaan? (a) not enough info (b) 16 (c) 17 (d) 5
23. 23.🧩 Meera is 11 years old. Kabir is older than Meera. How old is Kabir? (a) 16 (b) 12 (c) not enough info (d) 13
24. 24.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
25. 25.🧩 Tara bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹40 (c) ₹25 (d) not enough info
26. 26.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
27. 27.🧩 Tara is 6 years old. Ananya is older than Tara. How old is Ananya? (a) not enough info (b) 11 (c) 7 (d) 8
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
29. 29.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 40 (c) not enough info (d) 8
30. 30.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 3 PM
31. 31.🧩 Arjun is 9 years old. Meera is 8 years older than Arjun. How old is Meera? (a) 18 (b) 17 (c) not enough info (d) 8
32. 32.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
33. 33.🧩 Meera is 6 years old. Saanvi is 5 years older than Meera. How old is Saanvi? (a) 5 (b) 11 (c) not enough info (d) 12
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.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
36. 36.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 4 PM (c) 8 PM (d) not enough info
37. 37.🧩 A box has 3 rows of apples, with 8 in each row. How many apples are in the box? (a) 32 (b) 11 (c) not enough info (d) 24
38. 38.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
39. 39.🧩 Kabir is 8 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 13 (b) 9 (c) 10 (d) not enough info
40. 40.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only

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