Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 989 · 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? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) 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 mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
3. 3.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
4. 4.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 2 PM (c) 4 PM (d) not enough info
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
6. 6.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
7. 7.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
8. 8.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
11. 11.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
12. 12.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
13. 13.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
14. 14.🧩 Kabir is 11 years old. Aarav is older than Kabir. How old is Aarav? (a) not enough info (b) 16 (c) 13 (d) 12
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
16. 16.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
17. 17.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
18. 18.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
20. 20.🧩 Diya is 9 years old. Saanvi is older than Diya. How old is Saanvi? (a) 10 (b) not enough info (c) 11 (d) 14
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
22. 22.🧩 Kabir bought 3 notebooks and a water bottle for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹117 (b) ₹120 (c) not enough info (d) ₹40
23. 23.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Diya is 8 years old. Meera is older than Diya. How old is Meera? (a) 13 (b) 9 (c) 10 (d) not enough info
25. 25.🧩 Tara is 11 years old. Ishaan is older than Tara. How old is Ishaan? (a) 12 (b) 16 (c) 13 (d) not enough info
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
27. 27.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 9 (b) 90 (c) 18 (d) not enough info
28. 28.🧩 Meera bought 2 pens and a lunch box for ₹210 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹208 (c) ₹105 (d) ₹210
29. 29.🧩 Arjun bought 5 pens for ₹125 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹125 (c) not enough info (d) ₹25
30. 30.🧩 Ananya bought 4 kites and a bag for ₹280 in all. Each kite cost the same. What did one kite cost? (a) ₹276 (b) not enough info (c) ₹280 (d) ₹70
31. 31.🧩 Rohan bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹120
32. 32.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 7 PM (c) not enough info (d) 8 PM
33. 33.🧩 Saanvi bought 5 mangoes and a cap for ₹305 in all. Each mango cost the same. What did one mango cost? (a) ₹61 (b) ₹300 (c) not enough info (d) ₹305
34. 34.🧩 Saanvi bought 2 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹138 (c) ₹70 (d) ₹140
35. 35.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) not enough info (b) 9 (c) 90 (d) 18
36. 36.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
37. 37.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
38. 38.🧩 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
39. 39.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) not enough info (c) 10 (d) 5
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True

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