Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 461 · 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.” gives enough evidence. (a) False (b) True
2. 2.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
3. 3.🥭 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) yes, it is certain (c) no, check more (d) yes, mangoes match
4. 4.🧩 Vihaan bought 2 balls and a cap for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹60 (c) ₹118 (d) not enough info
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
7. 7.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
8. 8.🧩 Nisha is 7 years old. Rohan is older than Nisha. How old is Rohan? (a) 12 (b) not enough info (c) 9 (d) 8
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
12. 12.📊 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
13. 13.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
14. 14.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 7 PM (c) not enough info (d) 8 PM
15. 15.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
19. 19.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
20. 20.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
21. 21.🧩 Arjun is 11 years old. Kabir is older than Arjun. How old is Kabir? (a) 16 (b) 12 (c) not enough info (d) 13
22. 22.🧩 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
23. 23.🧩 Kabir bought 2 pens and a bag for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹98 (b) not enough info (c) ₹100 (d) ₹50
24. 24.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
25. 25.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
26. 26.🧩 Kabir bought 5 kites and a bag for ₹355 in all. Each kite cost the same. What did one kite cost? (a) ₹350 (b) not enough info (c) ₹71 (d) ₹355
27. 27.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 3 PM (c) 7 PM (d) 6 PM
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
29. 29.🧩 Aarav bought 5 markers and a water bottle for ₹335 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹335 (c) ₹67 (d) ₹330
30. 30.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) 6 PM (d) not enough info
31. 31.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
32. 32.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 54 (c) 14 (d) 48
33. 33.🧩 A box has 3 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 9 (b) 18 (c) 24 (d) not enough info
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
35. 35.🧩 Meera bought 4 kites for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹40 (c) ₹160 (d) not enough info
36. 36.🧩 Meera is 7 years old. Aarav is older than Meera. How old is Aarav? (a) 12 (b) 9 (c) not enough info (d) 8
37. 37.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
38. 38.🧩 Kabir bought 3 kites and a lunch box for ₹230 in all. Each kite cost the same. What did one kite cost? (a) ₹76 (b) not enough info (c) ₹230 (d) ₹227
39. 39.🐕 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
40. 40.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) 9 (c) not enough info (d) 90

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