Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 156 · 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.🧩 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
2. 2.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
3. 3.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
4. 4.🧩 Diya bought 3 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹150 (c) not enough info (d) ₹55
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
8. 8.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 9 (b) 90 (c) 18 (d) not enough info
9. 9.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
10. 10.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) yes, it is certain (d) no mango is sweet
11. 11.🧩 Vihaan is 10 years old. Diya is older than Vihaan. How old is Diya? (a) 12 (b) 15 (c) not enough info (d) 11
12. 12.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
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
14. 14.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) not enough info (c) 6 PM (d) 5 PM
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Diya is 9 years old. Kabir is 9 years older than Diya. How old is Kabir? (a) 9 (b) 19 (c) not enough info (d) 18
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
19. 19.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) 6 PM (d) not enough info
20. 20.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 30 (b) not enough info (c) 11 (d) 35
21. 21.🧩 Ishaan is 8 years old. Meera is 9 years older than Ishaan. How old is Meera? (a) 9 (b) 17 (c) 18 (d) not enough info
22. 22.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 3 PM (d) not enough info
23. 23.🧩 Saanvi bought 2 notebooks and a bag for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) ₹118 (c) ₹60 (d) not enough info
24. 24.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
27. 27.🧩 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
28. 28.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 42 (b) 13 (c) not enough info (d) 49
29. 29.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
30. 30.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
31. 31.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 16 (c) 80 (d) not enough info
32. 32.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
33. 33.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Aarav bought 3 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) not enough info (c) ₹20 (d) ₹25
36. 36.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) 4 (c) not enough info (d) 40
37. 37.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
38. 38.🧩 Ananya bought 2 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹60
39. 39.🧩 Kabir is 7 years old. Diya is 3 years older than Kabir. How old is Diya? (a) 3 (b) not enough info (c) 11 (d) 10
40. 40.🧩 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

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