Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 988 · 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 the whole class (c) asking one friend (d) asking your pet
2. 2.🧩 Nisha bought 5 mangoes for ₹175 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹35 (c) ₹175 (d) not enough info
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
4. 4.🧩 Rohan is 12 years old. Meera is older than Rohan. How old is Meera? (a) 17 (b) 14 (c) 13 (d) not enough info
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Arjun bought 2 kites and a lunch box for ₹120 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹118 (c) ₹120 (d) ₹60
7. 7.🧩 A box has 8 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 40 (b) not enough info (c) 45 (d) 13
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
10. 10.🧩 Kabir is 7 years old. Rohan is 8 years older than Kabir. How old is Rohan? (a) not enough info (b) 8 (c) 15 (d) 16
11. 11.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Tara is 6 years old. Rohan is 9 years older than Tara. How old is Rohan? (a) 15 (b) not enough info (c) 9 (d) 16
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
18. 18.🥭 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, mangoes match (c) yes, it is certain (d) no mango is sweet
19. 19.🧩 Kabir is 7 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 9 (b) 12 (c) not enough info (d) 8
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Meera is 8 years old. Diya is 2 years older than Meera. How old is Diya? (a) 11 (b) 10 (c) 2 (d) not enough info
22. 22.🧩 Tara bought 5 notebooks for ₹125 in all. Each notebook cost the same. What did one notebook cost? (a) ₹125 (b) ₹30 (c) ₹25 (d) not enough info
23. 23.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
24. 24.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
25. 25.🧩 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
26. 26.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
29. 29.🧩 A box has 4 rows of apples, with 9 in each row. How many apples are in the box? (a) 36 (b) not enough info (c) 45 (d) 13
30. 30.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
31. 31.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
32. 32.🧩 Aarav bought 6 balls for ₹270 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹270 (c) ₹50 (d) ₹45
33. 33.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
34. 34.🧩 Tara bought 6 markers and a lunch box for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹84 (b) not enough info (c) ₹90 (d) ₹15
35. 35.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 24 (b) 9 (c) not enough info (d) 20
36. 36.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
37. 37.🧩 Ananya is 10 years old. Kabir is older than Ananya. How old is Kabir? (a) 12 (b) 11 (c) not enough info (d) 15
38. 38.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 5 PM (d) 9 PM
39. 39.🧩 Meera is 8 years old. Kabir is 2 years older than Meera. How old is Kabir? (a) not enough info (b) 2 (c) 10 (d) 11
40. 40.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM

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