Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 147 · 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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM
2. 2.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
3. 3.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 45 (b) 13 (c) 36 (d) not enough info
4. 4.🧩 Meera bought 3 kites and a lunch box for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹16 (b) not enough info (c) ₹50 (d) ₹47
5. 5.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
6. 6.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 2 PM (d) 4 PM
7. 7.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
8. 8.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
9. 9.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
11. 11.🧩 Ananya bought 3 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹30 (c) ₹10 (d) not enough info
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
13. 13.🧩 Aarav bought 5 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹60 (d) ₹300
14. 14.🧩 Arjun bought 4 pens and a water bottle for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) not enough info (c) ₹196 (d) ₹200
15. 15.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Rohan bought 4 kites and a bag for ₹190 in all. Each kite cost the same. What did one kite cost? (a) ₹190 (b) not enough info (c) ₹47 (d) ₹186
17. 17.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 8 (b) 20 (c) not enough info (d) 16
18. 18.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
19. 19.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
21. 21.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 5 PM
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
23. 23.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) yes, mangoes match (d) no mango is sweet
24. 24.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
25. 25.🧩 Tara bought 2 notebooks and a water bottle for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹50 (c) ₹100 (d) ₹98
26. 26.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
27. 27.🧩 Rohan bought 4 balls and a cap for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) ₹136 (c) not enough info (d) ₹140
28. 28.🧩 Kabir is 7 years old. Nisha is older than Kabir. How old is Nisha? (a) 8 (b) 9 (c) 12 (d) not enough info
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
30. 30.🧩 Ananya is 9 years old. Aarav is 8 years older than Ananya. How old is Aarav? (a) 18 (b) not enough info (c) 17 (d) 8
31. 31.🧩 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
32. 32.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
33. 33.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 6 PM
34. 34.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
35. 35.🧩 Meera bought 3 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹55 (c) ₹150 (d) not enough info
36. 36.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Vihaan is 6 years old. Kabir is 5 years older than Vihaan. How old is Kabir? (a) 12 (b) 11 (c) 5 (d) not enough info
38. 38.🧩 Ishaan is 9 years old. Arjun is 5 years older than Ishaan. How old is Arjun? (a) 14 (b) 15 (c) not enough info (d) 5
39. 39.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Aarav is 8 years old. Ishaan is 4 years older than Aarav. How old is Ishaan? (a) 13 (b) 12 (c) 4 (d) not enough info

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