Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 71 · 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 is 11 years old. Diya is 4 years older than Ananya. How old is Diya? (a) 4 (b) 16 (c) not enough info (d) 15
2. 2.🧩 Aarav is 7 years old. Rohan is 4 years older than Aarav. How old is Rohan? (a) not enough info (b) 11 (c) 4 (d) 12
3. 3.🧩 Kabir bought 6 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹30 (c) ₹150 (d) not enough info
4. 4.🧩 Saanvi bought 2 pens and a bag for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) ₹78 (c) not enough info (d) ₹40
5. 5.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
6. 6.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
7. 7.🧩 Diya is 7 years old. Kabir is older than Diya. How old is Kabir? (a) 12 (b) not enough info (c) 8 (d) 9
8. 8.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
9. 9.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
10. 10.📊 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
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
14. 14.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) 56 (b) 48 (c) 14 (d) not enough info
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Arjun bought 4 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹30 (c) ₹100 (d) not enough info
17. 17.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 7 PM
18. 18.🧩 Ishaan is 8 years old. Kabir is older than Ishaan. How old is Kabir? (a) 9 (b) not enough info (c) 13 (d) 10
19. 19.🧩 Meera bought 3 notebooks for ₹105 in all. Each notebook cost the same. What did one notebook cost? (a) ₹105 (b) not enough info (c) ₹35 (d) ₹40
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
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? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Arjun bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹60
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.🧩 Ishaan is 7 years old. Nisha is older than Ishaan. How old is Nisha? (a) 9 (b) 8 (c) not enough info (d) 12
28. 28.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
29. 29.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
30. 30.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
32. 32.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) not enough info (c) 9 PM (d) 6 PM
33. 33.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
35. 35.🧩 A box has 3 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 24 (b) 18 (c) not enough info (d) 9
36. 36.🧩 Meera bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹40 (d) ₹25
37. 37.🧩 Saanvi is 10 years old. Rohan is older than Saanvi. How old is Rohan? (a) 15 (b) 11 (c) not enough info (d) 12
38. 38.🧩 Saanvi is 12 years old. Ishaan is 9 years older than Saanvi. How old is Ishaan? (a) not enough info (b) 9 (c) 21 (d) 22
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
40. 40.🧩 Vihaan is 12 years old. Meera is older than Vihaan. How old is Meera? (a) 14 (b) 17 (c) not enough info (d) 13

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