Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 678 · 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.📊 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
2. 2.🧩 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
3. 3.🧩 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
4. 4.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Ananya bought 4 kites and a water bottle for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹146 (b) not enough info (c) ₹37 (d) ₹150
6. 6.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
8. 8.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
9. 9.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no, check more (d) no mango is sweet
10. 10.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 13 (b) 49 (c) 42 (d) not enough info
11. 11.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
13. 13.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
14. 14.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
16. 16.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 6 PM
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
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.🧩 Aarav bought 5 balls and a lunch box for ₹265 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹265 (c) ₹260 (d) ₹53
20. 20.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) 7 PM (d) not enough info
21. 21.🧩 Tara is 6 years old. Vihaan is older than Tara. How old is Vihaan? (a) not enough info (b) 11 (c) 8 (d) 7
22. 22.🧩 Tara bought 4 balls and a water bottle for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹126 (b) ₹32 (c) not enough info (d) ₹130
23. 23.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 8 PM
24. 24.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Aarav is 9 years old. Rohan is older than Aarav. How old is Rohan? (a) not enough info (b) 10 (c) 14 (d) 11
26. 26.🧩 A box has 3 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 28 (c) 10 (d) 21
27. 27.🧩 Aarav bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) not enough info (c) ₹60 (d) ₹65
28. 28.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
29. 29.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
30. 30.🧩 Vihaan is 7 years old. Diya is older than Vihaan. How old is Diya? (a) 8 (b) 12 (c) not enough info (d) 9
31. 31.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Kabir bought 6 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹90
34. 34.🧩 Meera is 6 years old. Ananya is older than Meera. How old is Ananya? (a) 11 (b) 8 (c) not enough info (d) 7
35. 35.🧩 Kabir is 12 years old. Tara is older than Kabir. How old is Tara? (a) 17 (b) 14 (c) not enough info (d) 13
36. 36.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
37. 37.🧩 Diya is 11 years old. Aarav is older than Diya. How old is Aarav? (a) 12 (b) 16 (c) 13 (d) not enough info
38. 38.🧩 Kabir bought 4 balls for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) not enough info (c) ₹45 (d) ₹160
39. 39.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Meera is 6 years old. Ishaan is 3 years older than Meera. How old is Ishaan? (a) 9 (b) not enough info (c) 3 (d) 10

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