Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 652 · 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) not enough evidence (b) enough evidence
2. 2.🧩 Kabir bought 6 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹134 (b) ₹140 (c) not enough info (d) ₹23
3. 3.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
5. 5.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
6. 6.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
7. 7.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
8. 8.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 8 PM
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Meera bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹60 (c) not enough info (d) ₹20
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 5 PM
13. 13.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
14. 14.🧩 Ananya bought 3 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹120
15. 15.🧩 Tara is 10 years old. Arjun is 8 years older than Tara. How old is Arjun? (a) 19 (b) 8 (c) 18 (d) not enough info
16. 16.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
19. 19.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
20. 20.🧩 Ishaan bought 6 pens for ₹360 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) not enough info (c) ₹360 (d) ₹60
21. 21.🧩 Meera bought 4 kites for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹220 (b) not enough info (c) ₹55 (d) ₹60
22. 22.🧩 A box has 4 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 30 (b) 24 (c) not enough info (d) 10
23. 23.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
24. 24.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 11 (b) not enough info (c) 30 (d) 36
25. 25.🧩 Meera bought 2 kites and a cap for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) ₹138 (c) not enough info (d) ₹70
26. 26.🥭 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) yes, it is certain (c) no, check more (d) no mango is sweet
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Ishaan is 10 years old. Meera is older than Ishaan. How old is Meera? (a) 11 (b) not enough info (c) 15 (d) 12
29. 29.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
30. 30.🧩 Kabir bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) not enough info (c) ₹35 (d) ₹30
31. 31.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
32. 32.🧩 Ananya bought 4 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹80 (b) ₹25 (c) ₹20 (d) not enough info
33. 33.🧩 A box has 3 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 8 (b) 15 (c) 20 (d) not enough info
34. 34.🧩 Vihaan is 11 years old. Aarav is older than Vihaan. How old is Aarav? (a) 13 (b) 12 (c) 16 (d) not enough info
35. 35.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Aarav is 12 years old. Arjun is older than Aarav. How old is Arjun? (a) 13 (b) not enough info (c) 14 (d) 17
37. 37.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
38. 38.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
39. 39.🧩 Rohan bought 3 balls for ₹45 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹45 (c) ₹20 (d) ₹15
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing

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