Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 656 · 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.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) 10 (b) 21 (c) 28 (d) not enough info
2. 2.🐕 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
3. 3.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
4. 4.🧩 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
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
6. 6.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
7. 7.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
8. 8.🥭 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, mangoes match (c) yes, it is certain (d) no mango is sweet
9. 9.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
10. 10.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 12 (c) not enough info (d) 60
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
12. 12.🧩 A box has 3 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 24 (b) 32 (c) 11 (d) not enough info
13. 13.🧩 Rohan bought 2 notebooks and a lunch box for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹80 (c) ₹78 (d) not enough info
14. 14.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
15. 15.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
16. 16.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) 6 PM (d) not enough info
17. 17.🧩 Meera bought 6 mangoes and a lunch box for ₹230 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹230 (c) ₹38 (d) ₹224
18. 18.🧩 Saanvi bought 2 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹100 (c) ₹50 (d) ₹55
19. 19.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
21. 21.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 16 (b) 7 (c) 12 (d) not enough info
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box has 6 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 13 (b) 49 (c) not enough info (d) 42
24. 24.🧩 Kabir is 7 years old. Vihaan is 6 years older than Kabir. How old is Vihaan? (a) 14 (b) 6 (c) 13 (d) not enough info
25. 25.🧩 Meera bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹15 (c) ₹90 (d) not enough info
26. 26.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
27. 27.🧩 Saanvi bought 6 markers for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹270
28. 28.🧩 Aarav is 6 years old. Ananya is 2 years older than Aarav. How old is Ananya? (a) not enough info (b) 2 (c) 8 (d) 9
29. 29.🧩 Tara is 11 years old. Diya is 2 years older than Tara. How old is Diya? (a) not enough info (b) 13 (c) 2 (d) 14
30. 30.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
31. 31.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
32. 32.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Ishaan is 11 years old. Tara is 4 years older than Ishaan. How old is Tara? (a) not enough info (b) 15 (c) 16 (d) 4
34. 34.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 9 PM
35. 35.🧩 Tara bought 3 pens and a lunch box for ₹195 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) not enough info (c) ₹195 (d) ₹192
36. 36.🧩 Aarav bought 5 kites and a cap for ₹70 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹70 (c) ₹14 (d) ₹65
37. 37.🧩 Kabir bought 3 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹60
38. 38.🧩 Meera is 12 years old. Diya is older than Meera. How old is Diya? (a) 13 (b) not enough info (c) 17 (d) 14
39. 39.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
40. 40.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info

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