Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 372 · 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.🧩 Kabir is 7 years old. Saanvi is older than Kabir. How old is Saanvi? (a) 8 (b) not enough info (c) 9 (d) 12
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
4. 4.🧩 A box has 4 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 32 (b) not enough info (c) 40 (d) 12
5. 5.🧩 Ananya bought 6 markers and a bag for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹33 (b) ₹200 (c) ₹194 (d) not enough info
6. 6.🧩 Meera is 12 years old. Diya is 6 years older than Meera. How old is Diya? (a) 6 (b) not enough info (c) 19 (d) 18
7. 7.🥭 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) no mango is sweet (c) yes, it is certain (d) no, check more
8. 8.🧩 Arjun bought 3 mangoes and a cap for ₹165 in all. Each mango cost the same. What did one mango cost? (a) ₹165 (b) not enough info (c) ₹162 (d) ₹55
9. 9.🧩 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
10. 10.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
11. 11.🧩 A box has 4 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 20 (b) not enough info (c) 25 (d) 9
12. 12.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) 9 (c) 90 (d) not enough info
13. 13.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
14. 14.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Vihaan bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) not enough info (c) ₹25 (d) ₹30
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Arjun bought 6 markers for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹270 (b) not enough info (c) ₹50 (d) ₹45
18. 18.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
19. 19.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
20. 20.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
21. 21.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
22. 22.🧩 Rohan bought 2 mangoes and a lunch box for ₹110 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹55 (c) ₹108 (d) ₹110
23. 23.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 5 PM
24. 24.🧩 Ananya is 9 years old. Aarav is older than Ananya. How old is Aarav? (a) 11 (b) 14 (c) 10 (d) not enough info
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
26. 26.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
27. 27.🧩 Meera is 6 years old. Nisha is 4 years older than Meera. How old is Nisha? (a) 11 (b) 4 (c) not enough info (d) 10
28. 28.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
30. 30.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
31. 31.🧩 Diya is 12 years old. Rohan is 4 years older than Diya. How old is Rohan? (a) not enough info (b) 4 (c) 17 (d) 16
32. 32.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
33. 33.🧩 Meera is 11 years old. Kabir is 6 years older than Meera. How old is Kabir? (a) 6 (b) not enough info (c) 18 (d) 17
34. 34.🧩 Tara is 6 years old. Saanvi is 6 years older than Tara. How old is Saanvi? (a) 6 (b) 12 (c) not enough info (d) 13
35. 35.🧩 Rohan bought 5 pens and a cap for ₹310 in all. Each pen cost the same. What did one pen cost? (a) ₹62 (b) ₹305 (c) ₹310 (d) not enough info
36. 36.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
38. 38.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
40. 40.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 3 PM

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