Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 430 · 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.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) 3 PM (d) not enough info
2. 2.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) 7 PM (d) not enough info
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
4. 4.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
5. 5.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
6. 6.🧩 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
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Arjun is 10 years old. Aarav is older than Arjun. How old is Aarav? (a) 15 (b) 12 (c) not enough info (d) 11
11. 11.🧩 Ishaan bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) ₹65 (c) not enough info (d) ₹60
12. 12.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
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
14. 14.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
16. 16.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
17. 17.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
20. 20.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Meera is 10 years old. Kabir is older than Meera. How old is Kabir? (a) 12 (b) 15 (c) 11 (d) not enough info
22. 22.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
23. 23.🧩 Rohan bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹40 (c) ₹25 (d) not enough info
24. 24.🧩 Ananya is 8 years old. Vihaan is 3 years older than Ananya. How old is Vihaan? (a) 11 (b) not enough info (c) 12 (d) 3
25. 25.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
26. 26.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 80 (d) 16
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
28. 28.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
29. 29.🧩 Ananya is 10 years old. Aarav is 3 years older than Ananya. How old is Aarav? (a) 13 (b) 14 (c) 3 (d) not enough info
30. 30.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
31. 31.🧩 Rohan is 8 years old. Nisha is older than Rohan. How old is Nisha? (a) 10 (b) 9 (c) 13 (d) not enough info
32. 32.🧩 A box has 7 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 28 (b) 32 (c) 11 (d) not enough info
33. 33.🧩 Kabir bought 4 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹45 (c) ₹180 (d) not enough info
34. 34.🧩 Rohan is 6 years old. Aarav is 9 years older than Rohan. How old is Aarav? (a) 16 (b) 15 (c) 9 (d) not enough info
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
37. 37.🧩 Kabir is 7 years old. Tara is older than Kabir. How old is Tara? (a) 8 (b) 12 (c) 9 (d) not enough info
38. 38.🧩 A box has 4 rows of oranges, with 9 in each row. How many oranges are in the box? (a) not enough info (b) 45 (c) 13 (d) 36
39. 39.🧩 Arjun is 11 years old. Nisha is older than Arjun. How old is Nisha? (a) 13 (b) 16 (c) 12 (d) not enough info
40. 40.🧩 Tara bought 2 pens and a lunch box for ₹130 in all. Each pen cost the same. What did one pen cost? (a) ₹130 (b) ₹128 (c) not enough info (d) ₹65

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