Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 177 · 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.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
3. 3.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
4. 4.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
5. 5.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
6. 6.🧩 Kabir bought 4 notebooks and a water bottle for ₹290 in all. Each notebook cost the same. What did one notebook cost? (a) ₹286 (b) ₹72 (c) not enough info (d) ₹290
7. 7.🧩 A box has 4 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 10 (b) 30 (c) not enough info (d) 24
8. 8.🧩 Nisha is 8 years old. Arjun is 4 years older than Nisha. How old is Arjun? (a) not enough info (b) 4 (c) 13 (d) 12
9. 9.🧩 Diya is 9 years old. Ananya is 5 years older than Diya. How old is Ananya? (a) 14 (b) 5 (c) not enough info (d) 15
10. 10.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
12. 12.🧩 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
13. 13.🥭 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 mango is sweet (c) yes, it is certain (d) no, check more
14. 14.🧩 Meera is 10 years old. Vihaan is older than Meera. How old is Vihaan? (a) 12 (b) 11 (c) not enough info (d) 15
15. 15.🧩 Vihaan is 6 years old. Diya is older than Vihaan. How old is Diya? (a) 11 (b) 8 (c) not enough info (d) 7
16. 16.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 9 PM
17. 17.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
21. 21.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
22. 22.🧩 A box has 7 rows of oranges, with 8 in each row. How many oranges are in the box? (a) not enough info (b) 15 (c) 56 (d) 64
23. 23.📊 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
24. 24.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
25. 25.🧩 Ananya bought 4 notebooks for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹160 (c) ₹40 (d) not enough info
26. 26.🧩 Tara bought 6 mangoes and a bag for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹80 (b) not enough info (c) ₹74 (d) ₹13
27. 27.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
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Aarav bought 2 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹80 (c) ₹45 (d) ₹40
30. 30.🧩 A box has 7 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 40 (b) not enough info (c) 12 (d) 35
31. 31.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
32. 32.🧩 A box has 7 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 64 (c) 15 (d) 56
33. 33.🧩 Diya is 11 years old. Aarav is 9 years older than Diya. How old is Aarav? (a) not enough info (b) 21 (c) 9 (d) 20
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
36. 36.🧩 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
37. 37.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
38. 38.🧩 Tara is 11 years old. Ananya is 3 years older than Tara. How old is Ananya? (a) 3 (b) not enough info (c) 14 (d) 15
39. 39.🧩 Diya bought 5 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) not enough info (c) ₹40 (d) ₹45
40. 40.🧩 Ananya bought 4 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹80

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