Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 85 · 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 asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
6. 6.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
7. 7.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Tara bought 5 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹75 (c) not enough info (d) ₹15
9. 9.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
10. 10.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
11. 11.🧩 Kabir is 11 years old. Diya is older than Kabir. How old is Diya? (a) 12 (b) 13 (c) 16 (d) not enough info
12. 12.🧩 Ishaan bought 4 mangoes and a lunch box for ₹260 in all. Each mango cost the same. What did one mango cost? (a) ₹260 (b) ₹65 (c) ₹256 (d) not enough info
13. 13.🥭 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) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
14. 14.🧩 Meera bought 4 markers and a water bottle for ₹290 in all. Each marker cost the same. What did one marker cost? (a) ₹286 (b) ₹290 (c) not enough info (d) ₹72
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
17. 17.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
18. 18.🧩 Diya is 10 years old. Vihaan is older than Diya. How old is Vihaan? (a) 12 (b) not enough info (c) 15 (d) 11
19. 19.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 20 (b) 24 (c) 9 (d) not enough info
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
21. 21.🧩 Arjun is 12 years old. Kabir is 7 years older than Arjun. How old is Kabir? (a) 20 (b) not enough info (c) 19 (d) 7
22. 22.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
23. 23.🧩 Tara bought 2 markers and a bag for ₹70 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹35 (c) ₹68 (d) ₹70
24. 24.🧩 Kabir is 9 years old. Ishaan is 2 years older than Kabir. How old is Ishaan? (a) 2 (b) not enough info (c) 12 (d) 11
25. 25.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
27. 27.🧩 Aarav is 8 years old. Rohan is older than Aarav. How old is Rohan? (a) 10 (b) not enough info (c) 13 (d) 9
28. 28.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
29. 29.🧩 Vihaan is 7 years old. Aarav is 7 years older than Vihaan. How old is Aarav? (a) not enough info (b) 15 (c) 7 (d) 14
30. 30.🧩 Ananya is 12 years old. Diya is 9 years older than Ananya. How old is Diya? (a) not enough info (b) 22 (c) 9 (d) 21
31. 31.🧩 Vihaan is 6 years old. Aarav is 7 years older than Vihaan. How old is Aarav? (a) 14 (b) 13 (c) 7 (d) not enough info
32. 32.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
33. 33.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
34. 34.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
35. 35.🧩 A box has 8 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 72 (b) not enough info (c) 64 (d) 16
36. 36.🧩 Ananya is 12 years old. Vihaan is 8 years older than Ananya. How old is Vihaan? (a) 21 (b) 8 (c) not enough info (d) 20
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Diya is 12 years old. Meera is 5 years older than Diya. How old is Meera? (a) 18 (b) 5 (c) 17 (d) not enough info
39. 39.🧩 Nisha bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹70 (c) ₹35 (d) ₹40
40. 40.🧩 Vihaan bought 2 mangoes and a water bottle for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹88 (c) ₹45 (d) not enough info

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