Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 6 · 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.🧩 Nisha is 7 years old. Vihaan is older than Nisha. How old is Vihaan? (a) not enough info (b) 8 (c) 12 (d) 9
2. 2.🧩 Kabir bought 2 markers for ₹30 in all. Each marker cost the same. What did one marker cost? (a) ₹20 (b) not enough info (c) ₹30 (d) ₹15
3. 3.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Ananya is 12 years old. Arjun is older than Ananya. How old is Arjun? (a) 13 (b) not enough info (c) 17 (d) 14
5. 5.🧩 A box has 4 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 28 (b) not enough info (c) 11 (d) 35
6. 6.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
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.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) not enough info (d) 6 PM
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Ananya is 11 years old. Rohan is older than Ananya. How old is Rohan? (a) 12 (b) 13 (c) 16 (d) not enough info
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
15. 15.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
16. 16.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
17. 17.🧩 Tara bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹25 (c) ₹75 (d) ₹30
18. 18.🧩 Saanvi bought 5 kites for ₹275 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹60 (c) ₹275 (d) ₹55
19. 19.🧩 Aarav bought 6 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹90 (d) ₹20
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
21. 21.🧩 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
22. 22.🧩 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
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
24. 24.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) no, check more (d) yes, mangoes match
25. 25.🧩 Tara is 7 years old. Nisha is 2 years older than Tara. How old is Nisha? (a) 9 (b) 2 (c) 10 (d) not enough info
26. 26.🧩 Kabir is 11 years old. Diya is 2 years older than Kabir. How old is Diya? (a) 2 (b) 13 (c) 14 (d) not enough info
27. 27.🧩 Kabir bought 5 pens and a cap for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹75 (b) not enough info (c) ₹16 (d) ₹80
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
29. 29.🧩 Rohan bought 2 markers and a water bottle for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹120 (c) not enough info (d) ₹118
30. 30.🧩 A box has 4 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 40 (c) 32 (d) 12
31. 31.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
32. 32.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM
33. 33.🧩 A box has 3 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 7 (c) 12 (d) 16
34. 34.🧩 A box has 6 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 56 (b) 48 (c) 14 (d) not enough info
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Rohan is 10 years old. Ananya is 5 years older than Rohan. How old is Ananya? (a) 5 (b) 16 (c) not enough info (d) 15
37. 37.🧩 A box has 4 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 8 (c) 20 (d) 16
38. 38.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
39. 39.🧩 Diya is 12 years old. Nisha is older than Diya. How old is Nisha? (a) 13 (b) 14 (c) 17 (d) not enough info
40. 40.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence

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