Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 733 · 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.🧩 Vihaan is 8 years old. Nisha is older than Vihaan. How old is Nisha? (a) not enough info (b) 9 (c) 13 (d) 10
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.🧩 Meera bought 6 mangoes and a water bottle for ₹350 in all. Each mango cost the same. What did one mango cost? (a) ₹350 (b) not enough info (c) ₹344 (d) ₹58
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
6. 6.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
7. 7.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
8. 8.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
9. 9.🧩 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
10. 10.🥭 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) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
11. 11.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
12. 12.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
13. 13.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
14. 14.🧩 Diya is 8 years old. Arjun is 9 years older than Diya. How old is Arjun? (a) not enough info (b) 18 (c) 17 (d) 9
15. 15.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
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
17. 17.🧩 Tara bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹110 (c) ₹60 (d) not enough info
18. 18.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
19. 19.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 3 PM
20. 20.🧩 Diya bought 2 pens and a water bottle for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹48 (b) ₹25 (c) not enough info (d) ₹50
21. 21.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
22. 22.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
23. 23.🧩 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
24. 24.🧩 Ishaan is 11 years old. Tara is older than Ishaan. How old is Tara? (a) 16 (b) 12 (c) not enough info (d) 13
25. 25.🧩 Arjun bought 2 markers and a cap for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹198 (b) ₹100 (c) ₹200 (d) not enough info
26. 26.🧩 Kabir is 11 years old. Vihaan is 5 years older than Kabir. How old is Vihaan? (a) 5 (b) 16 (c) not enough info (d) 17
27. 27.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
28. 28.🧩 Aarav bought 2 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹50 (c) ₹45 (d) not enough info
29. 29.🧩 Saanvi is 10 years old. Ananya is 7 years older than Saanvi. How old is Ananya? (a) not enough info (b) 17 (c) 7 (d) 18
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
31. 31.🧩 A box has 4 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 20 (b) not enough info (c) 8 (d) 16
32. 32.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box has 6 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 63 (b) 54 (c) not enough info (d) 15
35. 35.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Nisha is 7 years old. Diya is older than Nisha. How old is Diya? (a) 9 (b) not enough info (c) 12 (d) 8
37. 37.🧩 Saanvi is 10 years old. Aarav is older than Saanvi. How old is Aarav? (a) not enough info (b) 11 (c) 12 (d) 15
38. 38.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False

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