Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 329 · 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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
2. 2.🥭 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 mango is sweet (d) no, check more
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
8. 8.🧩 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
9. 9.🧩 Saanvi is 11 years old. Aarav is 4 years older than Saanvi. How old is Aarav? (a) not enough info (b) 16 (c) 15 (d) 4
10. 10.🧩 Meera bought 4 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹200 (b) ₹55 (c) not enough info (d) ₹50
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
13. 13.🧩 Kabir bought 5 balls for ₹250 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹250 (c) not enough info (d) ₹50
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.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
16. 16.🧩 Vihaan bought 5 notebooks and a bag for ₹245 in all. Each notebook cost the same. What did one notebook cost? (a) ₹240 (b) not enough info (c) ₹245 (d) ₹49
17. 17.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
18. 18.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 9 PM (d) 8 PM
19. 19.🧩 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
20. 20.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) not enough info (d) 6 PM
21. 21.🧩 Aarav bought 6 balls for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) not enough info (c) ₹50 (d) ₹300
22. 22.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 5 PM
23. 23.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
24. 24.🧩 Aarav bought 6 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹150 (c) ₹25 (d) ₹30
25. 25.🧩 Ananya bought 4 mangoes and a water bottle for ₹290 in all. Each mango cost the same. What did one mango cost? (a) ₹290 (b) ₹286 (c) ₹72 (d) not enough info
26. 26.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
27. 27.🧩 Meera is 11 years old. Ananya is 8 years older than Meera. How old is Ananya? (a) 8 (b) 19 (c) not enough info (d) 20
28. 28.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
30. 30.🧩 Kabir bought 6 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹10 (b) ₹15 (c) not enough info (d) ₹60
31. 31.🧩 Arjun bought 3 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹150 (c) not enough info (d) ₹50
32. 32.🧩 Kabir is 12 years old. Meera is older than Kabir. How old is Meera? (a) 13 (b) not enough info (c) 17 (d) 14
33. 33.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
34. 34.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 49 (c) 13 (d) 42
35. 35.🧩 Aarav bought 5 notebooks for ₹250 in all. Each notebook cost the same. What did one notebook cost? (a) ₹250 (b) not enough info (c) ₹50 (d) ₹55
36. 36.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
37. 37.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
38. 38.🧩 Vihaan is 8 years old. Saanvi is 3 years older than Vihaan. How old is Saanvi? (a) 3 (b) not enough info (c) 11 (d) 12
39. 39.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence

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