Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 886 · 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.🧩 Ishaan bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹10 (d) ₹15
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
3. 3.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 36 (d) 42
4. 4.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
5. 5.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
6. 6.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
7. 7.🧩 Nisha is 12 years old. Kabir is 5 years older than Nisha. How old is Kabir? (a) 17 (b) not enough info (c) 5 (d) 18
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
9. 9.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
10. 10.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Diya is 9 years old. Meera is older than Diya. How old is Meera? (a) 10 (b) 11 (c) 14 (d) not enough info
13. 13.🧩 Meera bought 2 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹90 (c) ₹45 (d) ₹50
14. 14.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
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.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 3 PM
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Meera bought 6 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) ₹25 (c) not enough info (d) ₹30
20. 20.🧩 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
21. 21.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
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Diya is 12 years old. Meera is older than Diya. How old is Meera? (a) 17 (b) 13 (c) not enough info (d) 14
24. 24.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
25. 25.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM
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 has 8 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 13 (b) 40 (c) not enough info (d) 45
28. 28.🧩 Ishaan is 11 years old. Ananya is older than Ishaan. How old is Ananya? (a) 16 (b) 13 (c) not enough info (d) 12
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
30. 30.🧩 Tara bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹40 (c) not enough info (d) ₹20
31. 31.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
32. 32.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
33. 33.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) not enough info (b) 12 (c) 6 (d) 60
34. 34.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
35. 35.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
36. 36.🧩 Ananya bought 2 mangoes and a lunch box for ₹110 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹55 (c) ₹110 (d) ₹108
37. 37.🧩 Aarav bought 2 markers and a cap for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹98 (b) ₹50 (c) ₹100 (d) not enough info
38. 38.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
39. 39.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
40. 40.🧩 Arjun bought 2 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹30

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