Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 843 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
2. 2.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
4. 4.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
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
6. 6.🥭 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) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
7. 7.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 4 PM (c) 2 PM (d) not enough info
8. 8.🧩 Kabir is 8 years old. Aarav is 2 years older than Kabir. How old is Aarav? (a) 2 (b) 10 (c) not enough info (d) 11
9. 9.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
10. 10.🧩 Diya is 10 years old. Aarav is 4 years older than Diya. How old is Aarav? (a) 15 (b) 4 (c) 14 (d) not enough info
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
13. 13.🧩 Diya bought 5 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹150 (c) ₹35 (d) ₹30
14. 14.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 6 PM
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
16. 16.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
17. 17.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
19. 19.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 9 PM (d) 8 PM
20. 20.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
21. 21.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
22. 22.🧩 Nisha bought 6 markers for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹270 (b) not enough info (c) ₹45 (d) ₹50
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Kabir is 11 years old. Meera is older than Kabir. How old is Meera? (a) 12 (b) 16 (c) 13 (d) not enough info
25. 25.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
26. 26.🧩 Aarav is 8 years old. Vihaan is 8 years older than Aarav. How old is Vihaan? (a) not enough info (b) 16 (c) 17 (d) 8
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Saanvi bought 6 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹150 (c) ₹25 (d) ₹30
29. 29.🧩 Kabir bought 2 mangoes and a water bottle for ₹70 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹35 (c) ₹68 (d) ₹70
30. 30.🧩 A box has 5 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) not enough info (b) 42 (c) 12 (d) 35
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
32. 32.🧩 Ishaan bought 2 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹120 (d) ₹60
33. 33.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 6 PM (c) not enough info (d) 5 PM
34. 34.🧩 Arjun bought 3 notebooks and a cap for ₹145 in all. Each notebook cost the same. What did one notebook cost? (a) ₹48 (b) not enough info (c) ₹145 (d) ₹142
35. 35.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
36. 36.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
38. 38.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
40. 40.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM

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