Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 117 · 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.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
2. 2.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
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Rohan bought 6 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) not enough info (c) ₹55 (d) ₹50
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
7. 7.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
8. 8.🧩 Ananya bought 6 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹60 (c) ₹10 (d) ₹15
9. 9.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
13. 13.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
15. 15.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
16. 16.🧩 Nisha is 8 years old. Arjun is older than Nisha. How old is Arjun? (a) not enough info (b) 10 (c) 13 (d) 9
17. 17.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 60 (d) 6
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
19. 19.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 9 PM (c) 8 PM (d) 6 PM
20. 20.🧩 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
21. 21.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Nisha bought 6 kites and a lunch box for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹114 (c) not enough info (d) ₹120
23. 23.🧩 Diya is 11 years old. Ishaan is 6 years older than Diya. How old is Ishaan? (a) 18 (b) 17 (c) 6 (d) not enough info
24. 24.🧩 Arjun bought 2 balls and a water bottle for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹78 (b) ₹80 (c) not enough info (d) ₹40
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
26. 26.🧩 Diya bought 2 markers and a cap for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹25 (c) ₹48 (d) not enough info
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Nisha bought 3 pens for ₹135 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹50 (c) ₹135 (d) ₹45
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
30. 30.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
31. 31.🧩 A box has 8 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 81 (b) 17 (c) not enough info (d) 72
32. 32.🧩 Tara bought 6 pens and a bag for ₹130 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹124 (c) ₹130 (d) ₹21
33. 33.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
34. 34.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
35. 35.🧩 Saanvi is 8 years old. Kabir is 3 years older than Saanvi. How old is Kabir? (a) 11 (b) not enough info (c) 3 (d) 12
36. 36.🥭 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) yes, it is certain (c) no, check more (d) no mango is sweet
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
38. 38.🧩 Ananya is 12 years old. Rohan is older than Ananya. How old is Rohan? (a) 17 (b) 14 (c) 13 (d) not enough info
39. 39.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
40. 40.🧩 A box has 8 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 54 (c) 48 (d) 14

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