Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 996 · 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.🧩 Saanvi is 9 years old. Ananya is 3 years older than Saanvi. How old is Ananya? (a) 3 (b) not enough info (c) 12 (d) 13
2. 2.🧩 Meera is 9 years old. Tara is 8 years older than Meera. How old is Tara? (a) not enough info (b) 18 (c) 8 (d) 17
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 49 (b) not enough info (c) 14 (d) 56
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
6. 6.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
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, it is certain (b) no, check more (c) yes, mangoes match (d) no mango is sweet
8. 8.🧩 Nisha is 6 years old. Rohan is 9 years older than Nisha. How old is Rohan? (a) 16 (b) 15 (c) 9 (d) not enough info
9. 9.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 9 (b) 20 (c) 24 (d) not enough info
10. 10.🧩 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
11. 11.🧩 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
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Aarav is 9 years old. Diya is 2 years older than Aarav. How old is Diya? (a) 12 (b) 2 (c) 11 (d) not enough info
16. 16.🧩 Aarav is 6 years old. Ananya is 6 years older than Aarav. How old is Ananya? (a) 6 (b) not enough info (c) 12 (d) 13
17. 17.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
18. 18.🧩 Meera bought 3 mangoes and a lunch box for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹67 (b) not enough info (c) ₹23 (d) ₹70
19. 19.🧩 Diya bought 2 markers and a water bottle for ₹70 in all. Each marker cost the same. What did one marker cost? (a) ₹68 (b) ₹35 (c) ₹70 (d) not enough info
20. 20.🧩 Ishaan is 9 years old. Kabir is older than Ishaan. How old is Kabir? (a) 14 (b) not enough info (c) 10 (d) 11
21. 21.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
22. 22.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Aarav is 11 years old. Rohan is older than Aarav. How old is Rohan? (a) 12 (b) 13 (c) 16 (d) not enough info
25. 25.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
27. 27.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 6 PM
28. 28.🧩 Arjun is 9 years old. Diya is 5 years older than Arjun. How old is Diya? (a) 15 (b) not enough info (c) 14 (d) 5
29. 29.🧩 Aarav bought 2 pens and a cap for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹70 (b) ₹68 (c) ₹35 (d) not enough info
30. 30.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
32. 32.🧩 Kabir is 6 years old. Arjun is older than Kabir. How old is Arjun? (a) not enough info (b) 7 (c) 8 (d) 11
33. 33.🧩 Aarav bought 3 mangoes for ₹165 in all. Each mango cost the same. What did one mango cost? (a) ₹165 (b) ₹55 (c) not enough info (d) ₹60
34. 34.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
35. 35.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 6 PM (c) not enough info (d) 9 PM
36. 36.🧩 Arjun bought 3 pens for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹50 (c) ₹135 (d) not enough info
37. 37.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
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.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
40. 40.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) 80 (c) not enough info (d) 16

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