Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 385 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
3. 3.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 7 PM (c) 3 PM (d) not enough info
4. 4.🧩 Saanvi bought 3 markers and a lunch box for ₹140 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹140 (c) ₹137 (d) ₹46
5. 5.🧩 A box has 3 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 32 (b) 24 (c) 11 (d) not enough info
6. 6.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Tara is 6 years old. Ananya is 2 years older than Tara. How old is Ananya? (a) 9 (b) 8 (c) not enough info (d) 2
9. 9.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 7 (d) 70
10. 10.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
11. 11.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 10 (b) 24 (c) 28 (d) not enough info
12. 12.🧩 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
13. 13.🧩 Nisha bought 5 markers for ₹225 in all. Each marker cost the same. What did one marker cost? (a) ₹225 (b) ₹50 (c) not enough info (d) ₹45
14. 14.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
15. 15.🧩 Diya bought 4 markers and a water bottle for ₹250 in all. Each marker cost the same. What did one marker cost? (a) ₹62 (b) ₹250 (c) not enough info (d) ₹246
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Kabir bought 4 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹15 (c) ₹60 (d) not enough info
18. 18.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
19. 19.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 9 PM (d) 8 PM
20. 20.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
22. 22.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
23. 23.🧩 Vihaan is 8 years old. Rohan is older than Vihaan. How old is Rohan? (a) 9 (b) 10 (c) not enough info (d) 13
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
25. 25.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 18 (c) 90 (d) 9
26. 26.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) no mango is sweet (d) yes, mangoes match
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
28. 28.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
29. 29.🧩 Vihaan is 12 years old. Arjun is older than Vihaan. How old is Arjun? (a) 14 (b) 17 (c) 13 (d) not enough info
30. 30.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 7 PM (c) 5 PM (d) not enough info
31. 31.🧩 Tara is 6 years old. Nisha is 4 years older than Tara. How old is Nisha? (a) 4 (b) 11 (c) 10 (d) not enough info
32. 32.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
33. 33.🧩 Ishaan bought 2 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) ₹60 (c) ₹120 (d) not enough info
34. 34.🧩 Aarav bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹25 (c) ₹20 (d) ₹40
35. 35.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
36. 36.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
38. 38.🧩 Arjun bought 2 notebooks and a water bottle for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) not enough info (c) ₹48 (d) ₹25
39. 39.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True

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