Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 578 · 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 laddoos has 7 in each row. How many laddoos are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
3. 3.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) 21 (b) not enough info (c) 28 (d) 10
4. 4.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 7 (c) not enough info (d) 14
5. 5.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 7 PM (c) not enough info (d) 6 PM
6. 6.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
7. 7.🐕 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
8. 8.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 4 PM
9. 9.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
10. 10.🧩 Aarav bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹110 (c) ₹60 (d) ₹55
11. 11.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
12. 12.🧩 Vihaan is 7 years old. Aarav is 2 years older than Vihaan. How old is Aarav? (a) 10 (b) 2 (c) 9 (d) not enough info
13. 13.🧩 Vihaan is 11 years old. Rohan is older than Vihaan. How old is Rohan? (a) 13 (b) 16 (c) 12 (d) not enough info
14. 14.🧩 A box has 5 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 42 (b) 35 (c) not enough info (d) 12
15. 15.🧩 Arjun bought 5 notebooks for ₹225 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹225 (c) not enough info (d) ₹45
16. 16.🧩 Ishaan is 6 years old. Arjun is 9 years older than Ishaan. How old is Arjun? (a) 15 (b) 9 (c) 16 (d) not enough info
17. 17.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
18. 18.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 8 PM
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
20. 20.🧩 A box has 7 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 40 (c) 12 (d) 35
21. 21.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 5 (d) 50
24. 24.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Arjun is 8 years old. Aarav is older than Arjun. How old is Aarav? (a) 9 (b) 10 (c) not enough info (d) 13
26. 26.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
27. 27.🧩 Ishaan bought 5 pens for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹55 (c) ₹250 (d) not enough info
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
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.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
32. 32.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) 56 (b) 14 (c) not enough info (d) 49
33. 33.🧩 Arjun bought 3 kites and a lunch box for ₹260 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹260 (c) ₹257 (d) ₹86
34. 34.🧩 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
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
36. 36.🧩 Kabir is 10 years old. Rohan is 7 years older than Kabir. How old is Rohan? (a) 7 (b) 18 (c) 17 (d) not enough info
37. 37.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
38. 38.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Nisha bought 5 pens and a cap for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹130 (b) ₹27 (c) ₹135 (d) not enough info
40. 40.🧩 Aarav is 7 years old. Diya is 7 years older than Aarav. How old is Diya? (a) 15 (b) not enough info (c) 14 (d) 7

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