Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 993 · 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 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
2. 2.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.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
5. 5.🧩 Kabir bought 3 kites and a water bottle for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹46 (b) ₹140 (c) ₹137 (d) not enough info
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
7. 7.🧩 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
8. 8.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
10. 10.🧩 Rohan is 6 years old. Ananya is 5 years older than Rohan. How old is Ananya? (a) 12 (b) 11 (c) 5 (d) not enough info
11. 11.🧩 Kabir bought 6 mangoes and a water bottle for ₹170 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹170 (c) ₹164 (d) ₹28
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
16. 16.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
17. 17.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
18. 18.🧩 Ishaan bought 3 mangoes and a lunch box for ₹220 in all. Each mango cost the same. What did one mango cost? (a) ₹220 (b) ₹73 (c) not enough info (d) ₹217
19. 19.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
20. 20.🧩 Vihaan is 12 years old. Ishaan is 9 years older than Vihaan. How old is Ishaan? (a) not enough info (b) 22 (c) 21 (d) 9
21. 21.🧩 A box has 8 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 40 (c) 45 (d) 13
22. 22.🧩 Tara bought 2 markers and a water bottle for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹108 (b) ₹110 (c) ₹55 (d) not enough info
23. 23.📊 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
24. 24.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 24 (b) 9 (c) 18 (d) not enough info
25. 25.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
26. 26.🐕 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
27. 27.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
29. 29.🥭 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 mango is sweet (c) yes, mangoes match (d) no, check more
30. 30.🧩 Vihaan is 9 years old. Arjun is 5 years older than Vihaan. How old is Arjun? (a) 15 (b) 5 (c) 14 (d) not enough info
31. 31.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
32. 32.🧩 Meera bought 3 balls for ₹165 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹165 (c) ₹60 (d) ₹55
33. 33.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 12 (b) 7 (c) not enough info (d) 16
34. 34.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
36. 36.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
37. 37.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
38. 38.🧩 A box has 7 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 32 (c) 11 (d) 28
39. 39.🧩 Aarav is 9 years old. Ishaan is 3 years older than Aarav. How old is Ishaan? (a) not enough info (b) 3 (c) 13 (d) 12
40. 40.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 5 (d) 10

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