Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 219 · 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.🧩 Aarav bought 5 balls for ₹250 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) not enough info (c) ₹250 (d) ₹50
2. 2.🧩 Vihaan is 7 years old. Kabir is 2 years older than Vihaan. How old is Kabir? (a) 2 (b) not enough info (c) 10 (d) 9
3. 3.🧩 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
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Nisha is 7 years old. Kabir is older than Nisha. How old is Kabir? (a) 8 (b) not enough info (c) 12 (d) 9
7. 7.🧩 Kabir bought 6 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹50 (c) ₹55 (d) ₹300
8. 8.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 5 PM (d) 7 PM
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Saanvi is 8 years old. Tara is older than Saanvi. How old is Tara? (a) 10 (b) not enough info (c) 13 (d) 9
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.🧩 Tara is 12 years old. Saanvi is older than Tara. How old is Saanvi? (a) not enough info (b) 13 (c) 17 (d) 14
15. 15.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 42 (b) not enough info (c) 13 (d) 48
16. 16.🧩 Rohan is 11 years old. Tara is older than Rohan. How old is Tara? (a) 12 (b) not enough info (c) 16 (d) 13
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
19. 19.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 5 PM
20. 20.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
21. 21.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
22. 22.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) not enough info (c) 11 (d) 30
23. 23.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
24. 24.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
25. 25.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
26. 26.🧩 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
27. 27.🧩 Aarav bought 6 mangoes and a bag for ₹420 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹420 (c) ₹414 (d) ₹70
28. 28.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
29. 29.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
30. 30.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
32. 32.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Tara bought 6 mangoes for ₹270 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹45 (c) ₹270 (d) not enough info
36. 36.🧩 Diya is 11 years old. Tara is older than Diya. How old is Tara? (a) 16 (b) not enough info (c) 12 (d) 13
37. 37.🧩 Tara is 11 years old. Aarav is 6 years older than Tara. How old is Aarav? (a) 6 (b) 17 (c) 18 (d) not enough info
38. 38.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
39. 39.🧩 Diya is 11 years old. Vihaan is older than Diya. How old is Vihaan? (a) not enough info (b) 12 (c) 13 (d) 16
40. 40.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False

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