Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 291 · 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.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
2. 2.🧩 Diya bought 4 markers for ₹220 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹220 (c) ₹55 (d) ₹60
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
5. 5.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
6. 6.🐕 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
7. 7.🧩 Meera bought 4 notebooks and a water bottle for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹32 (b) ₹126 (c) ₹130 (d) not enough info
8. 8.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 3 PM (d) 6 PM
9. 9.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.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
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Ananya bought 6 kites and a lunch box for ₹410 in all. Each kite cost the same. What did one kite cost? (a) ₹68 (b) ₹404 (c) ₹410 (d) not enough info
16. 16.🧩 Aarav is 12 years old. Tara is older than Aarav. How old is Tara? (a) 17 (b) 14 (c) not enough info (d) 13
17. 17.🧩 A box has 6 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 13 (b) 42 (c) not enough info (d) 49
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Arjun bought 2 mangoes and a water bottle for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹170 (b) ₹85 (c) not enough info (d) ₹168
21. 21.🧩 Arjun is 12 years old. Aarav is older than Arjun. How old is Aarav? (a) 13 (b) 14 (c) 17 (d) not enough info
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.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 35 (c) 30 (d) 11
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
26. 26.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
28. 28.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
29. 29.🧩 Arjun bought 2 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹60 (c) ₹120 (d) ₹65
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
31. 31.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
32. 32.🧩 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
33. 33.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 16 (c) 12 (d) 7
34. 34.🧩 Ananya bought 6 markers and a lunch box for ₹230 in all. Each marker cost the same. What did one marker cost? (a) ₹38 (b) ₹224 (c) not enough info (d) ₹230
35. 35.🧩 Meera is 12 years old. Diya is 5 years older than Meera. How old is Diya? (a) not enough info (b) 17 (c) 18 (d) 5
36. 36.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
37. 37.🧩 Diya is 7 years old. Vihaan is older than Diya. How old is Vihaan? (a) 9 (b) 12 (c) not enough info (d) 8
38. 38.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Nisha bought 4 pens and a cap for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹116 (d) ₹30
40. 40.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

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