Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 933 · 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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
2. 2.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
3. 3.🧩 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
4. 4.🧩 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
5. 5.🧩 Vihaan bought 4 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) not enough info (c) ₹120 (d) ₹30
6. 6.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 9 PM
7. 7.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
8. 8.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
9. 9.🧩 Tara is 8 years old. Vihaan is older than Tara. How old is Vihaan? (a) 9 (b) 10 (c) not enough info (d) 13
10. 10.🧩 Rohan is 7 years old. Ananya is 2 years older than Rohan. How old is Ananya? (a) 10 (b) not enough info (c) 9 (d) 2
11. 11.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 6 PM
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
13. 13.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 4 PM (c) 8 PM (d) 7 PM
14. 14.🧩 Kabir bought 5 notebooks for ₹125 in all. Each notebook cost the same. What did one notebook cost? (a) ₹125 (b) not enough info (c) ₹30 (d) ₹25
15. 15.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
16. 16.🧩 A box has 6 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 13 (b) 49 (c) not enough info (d) 42
17. 17.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
19. 19.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 10 PM (c) not enough info (d) 6 PM
20. 20.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 4 PM
21. 21.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
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.🧩 Kabir is 7 years old. Arjun is older than Kabir. How old is Arjun? (a) 8 (b) 12 (c) 9 (d) not enough info
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
26. 26.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
27. 27.🧩 Ananya is 10 years old. Aarav is 9 years older than Ananya. How old is Aarav? (a) 20 (b) not enough info (c) 19 (d) 9
28. 28.🧩 Diya is 8 years old. Tara is 4 years older than Diya. How old is Tara? (a) 13 (b) 4 (c) not enough info (d) 12
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
30. 30.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
31. 31.🧩 Ishaan is 12 years old. Vihaan is 6 years older than Ishaan. How old is Vihaan? (a) 18 (b) 19 (c) not enough info (d) 6
32. 32.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Ishaan is 12 years old. Diya is older than Ishaan. How old is Diya? (a) 17 (b) 14 (c) 13 (d) not enough info
34. 34.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Rohan is 8 years old. Aarav is older than Rohan. How old is Aarav? (a) 10 (b) 13 (c) not enough info (d) 9
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Tara is 8 years old. Arjun is older than Tara. How old is Arjun? (a) 10 (b) 9 (c) 13 (d) not enough info
38. 38.🧩 Kabir bought 4 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹60 (d) ₹15
39. 39.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
40. 40.🧩 Rohan bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) not enough info (c) ₹10 (d) ₹15

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