Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 236 · 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.🧩 Ananya bought 4 balls for ₹80 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹80 (c) ₹20 (d) ₹25
2. 2.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 9 PM (d) 6 PM
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Saanvi is 9 years old. Rohan is 5 years older than Saanvi. How old is Rohan? (a) not enough info (b) 5 (c) 15 (d) 14
9. 9.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 90 (b) 9 (c) 18 (d) not enough info
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
12. 12.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
13. 13.🧩 Arjun is 12 years old. Saanvi is 6 years older than Arjun. How old is Saanvi? (a) 18 (b) 19 (c) not enough info (d) 6
14. 14.🧩 Aarav is 8 years old. Diya is older than Aarav. How old is Diya? (a) 13 (b) not enough info (c) 10 (d) 9
15. 15.🧩 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
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
17. 17.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
19. 19.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
24. 24.🐕 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
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
26. 26.🧩 Saanvi bought 2 notebooks and a water bottle for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹90 (c) ₹88 (d) not enough info
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
28. 28.🧩 Aarav is 6 years old. Ananya is 2 years older than Aarav. How old is Ananya? (a) 2 (b) 9 (c) not enough info (d) 8
29. 29.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 24 (b) 9 (c) not enough info (d) 20
30. 30.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
31. 31.🧩 Aarav bought 6 pens and a bag for ₹330 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹330 (c) ₹324 (d) not enough info
32. 32.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
33. 33.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
34. 34.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
35. 35.🧩 Aarav is 11 years old. Tara is 8 years older than Aarav. How old is Tara? (a) 8 (b) not enough info (c) 19 (d) 20
36. 36.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 9 PM
37. 37.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
38. 38.🧩 Aarav is 10 years old. Kabir is older than Aarav. How old is Kabir? (a) 12 (b) not enough info (c) 15 (d) 11
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
40. 40.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM

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