Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 758 · 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 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 5 PM
2. 2.🧩 Nisha bought 3 kites and a water bottle for ₹185 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹61 (c) ₹182 (d) ₹185
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
4. 4.🧩 Meera is 6 years old. Arjun is older than Meera. How old is Arjun? (a) 7 (b) not enough info (c) 8 (d) 11
5. 5.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
6. 6.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
8. 8.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 7 PM
9. 9.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
10. 10.🧩 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
11. 11.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
12. 12.🧩 Ananya bought 4 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹30 (d) ₹35
13. 13.🧩 Ananya bought 3 notebooks and a cap for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹100 (c) ₹97 (d) ₹33
14. 14.🧩 Aarav is 6 years old. Kabir is 6 years older than Aarav. How old is Kabir? (a) 6 (b) 12 (c) not enough info (d) 13
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
16. 16.🧩 Meera is 7 years old. Vihaan is 9 years older than Meera. How old is Vihaan? (a) 17 (b) 16 (c) 9 (d) not enough info
17. 17.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 13 (b) 49 (c) 42 (d) not enough info
18. 18.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
19. 19.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 11 (c) 32 (d) 24
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
21. 21.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 5 PM
22. 22.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
26. 26.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
27. 27.🧩 Meera is 8 years old. Diya is 2 years older than Meera. How old is Diya? (a) not enough info (b) 10 (c) 11 (d) 2
28. 28.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
29. 29.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
30. 30.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
31. 31.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 12 (b) not enough info (c) 40 (d) 35
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
34. 34.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
35. 35.🧩 Arjun is 10 years old. Ananya is 3 years older than Arjun. How old is Ananya? (a) not enough info (b) 3 (c) 13 (d) 14
36. 36.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
37. 37.🧩 Ishaan bought 6 mangoes and a lunch box for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹294 (b) not enough info (c) ₹50 (d) ₹300
38. 38.🧩 Meera is 7 years old. Tara is older than Meera. How old is Tara? (a) 9 (b) 12 (c) not enough info (d) 8
39. 39.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
40. 40.🧩 Diya is 6 years old. Vihaan is older than Diya. How old is Vihaan? (a) not enough info (b) 11 (c) 8 (d) 7

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