Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 711 · 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 8 years old. Saanvi is 6 years older than Kabir. How old is Saanvi? (a) 6 (b) 15 (c) 14 (d) not enough info
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
4. 4.🧩 Kabir is 12 years old. Saanvi is older than Kabir. How old is Saanvi? (a) 13 (b) 17 (c) not enough info (d) 14
5. 5.🧩 A box has 8 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 54 (b) 14 (c) 48 (d) not enough info
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Ishaan is 9 years old. Vihaan is 9 years older than Ishaan. How old is Vihaan? (a) not enough info (b) 18 (c) 9 (d) 19
8. 8.🧩 Rohan is 12 years old. Nisha is older than Rohan. How old is Nisha? (a) 14 (b) 13 (c) not enough info (d) 17
9. 9.🧩 Tara bought 6 kites and a cap for ₹370 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹370 (c) ₹61 (d) ₹364
10. 10.🧩 Vihaan bought 3 balls and a cap for ₹135 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹132 (c) not enough info (d) ₹135
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
13. 13.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
14. 14.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 35 (c) 11 (d) not enough info
15. 15.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
17. 17.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
18. 18.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Meera bought 2 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) not enough info (c) ₹60 (d) ₹35
20. 20.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) 14 (b) 48 (c) not enough info (d) 54
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
23. 23.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 9 (c) 90 (d) not enough info
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
26. 26.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
27. 27.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
28. 28.🧩 Diya is 8 years old. Meera is 4 years older than Diya. How old is Meera? (a) not enough info (b) 12 (c) 13 (d) 4
29. 29.🧩 Arjun is 7 years old. Aarav is 2 years older than Arjun. How old is Aarav? (a) 9 (b) 2 (c) not enough info (d) 10
30. 30.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
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
32. 32.🧩 Vihaan bought 5 markers and a lunch box for ₹390 in all. Each marker cost the same. What did one marker cost? (a) ₹78 (b) ₹390 (c) ₹385 (d) not enough info
33. 33.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
35. 35.🧩 Diya bought 6 balls and a cap for ₹250 in all. Each ball cost the same. What did one ball cost? (a) ₹41 (b) ₹250 (c) not enough info (d) ₹244
36. 36.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
37. 37.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no, check more (d) no mango is sweet
38. 38.🧩 Vihaan bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) ₹65 (c) ₹60 (d) not enough info
39. 39.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
40. 40.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess

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