Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 985 · 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 has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 45 (b) not enough info (c) 13 (d) 36
2. 2.🧩 Meera bought 4 pens for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) not enough info (c) ₹160 (d) ₹40
3. 3.🧩 Vihaan is 10 years old. Diya is older than Vihaan. How old is Diya? (a) 11 (b) 15 (c) not enough info (d) 12
4. 4.🧩 Meera is 7 years old. Saanvi is 5 years older than Meera. How old is Saanvi? (a) 12 (b) 13 (c) 5 (d) not enough info
5. 5.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
6. 6.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 8 PM
7. 7.🧩 Ishaan bought 2 markers and a cap for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) not enough info (c) ₹108 (d) ₹110
8. 8.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
9. 9.🧩 Nisha bought 2 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) not enough info (c) ₹25 (d) ₹20
10. 10.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
11. 11.🧩 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
12. 12.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
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Meera is 10 years old. Aarav is older than Meera. How old is Aarav? (a) 15 (b) not enough info (c) 12 (d) 11
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
16. 16.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
19. 19.🧩 Meera is 11 years old. Nisha is 2 years older than Meera. How old is Nisha? (a) not enough info (b) 13 (c) 2 (d) 14
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
21. 21.🧩 A box has 5 rows of apples, with 7 in each row. How many apples are in the box? (a) 12 (b) 42 (c) 35 (d) not enough info
22. 22.🧩 Aarav bought 5 balls and a lunch box for ₹380 in all. Each ball cost the same. What did one ball cost? (a) ₹76 (b) ₹380 (c) not enough info (d) ₹375
23. 23.🧩 A box has 8 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 63 (b) 15 (c) 56 (d) not enough info
24. 24.🧩 A box has 4 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 32 (b) 12 (c) not enough info (d) 40
25. 25.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
26. 26.🧩 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
27. 27.📊 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
28. 28.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
30. 30.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
31. 31.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 5 PM (c) 6 PM (d) not enough info
33. 33.🧩 Rohan is 6 years old. Diya is older than Rohan. How old is Diya? (a) 11 (b) 8 (c) not enough info (d) 7
34. 34.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
35. 35.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
36. 36.🧩 Tara is 11 years old. Kabir is 3 years older than Tara. How old is Kabir? (a) 15 (b) not enough info (c) 3 (d) 14
37. 37.🧩 Ishaan is 8 years old. Tara is 2 years older than Ishaan. How old is Tara? (a) not enough info (b) 11 (c) 10 (d) 2
38. 38.🧩 Aarav is 8 years old. Arjun is 4 years older than Aarav. How old is Arjun? (a) not enough info (b) 13 (c) 12 (d) 4
39. 39.🧩 Rohan is 6 years old. Saanvi is older than Rohan. How old is Saanvi? (a) 7 (b) 11 (c) not enough info (d) 8
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True

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