Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 953 · 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.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
2. 2.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
3. 3.🧩 Ishaan is 11 years old. Diya is 6 years older than Ishaan. How old is Diya? (a) 18 (b) not enough info (c) 17 (d) 6
4. 4.🧩 Nisha bought 6 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) not enough info (c) ₹20 (d) ₹15
5. 5.🧩 Diya bought 3 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹90 (b) ₹35 (c) not enough info (d) ₹30
6. 6.🥭 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) yes, mangoes match (d) no mango is sweet
7. 7.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
8. 8.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
9. 9.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
10. 10.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
11. 11.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 10 (c) 5 (d) 50
12. 12.🧩 Vihaan is 9 years old. Rohan is older than Vihaan. How old is Rohan? (a) not enough info (b) 14 (c) 10 (d) 11
13. 13.🐕 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
14. 14.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
15. 15.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
16. 16.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
17. 17.🧩 Ananya is 12 years old. Tara is older than Ananya. How old is Tara? (a) 14 (b) not enough info (c) 17 (d) 13
18. 18.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
20. 20.🧩 Tara bought 5 balls and a lunch box for ₹290 in all. Each ball cost the same. What did one ball cost? (a) ₹285 (b) ₹58 (c) not enough info (d) ₹290
21. 21.🧩 A box has 7 rows of apples, with 8 in each row. How many apples are in the box? (a) 15 (b) not enough info (c) 64 (d) 56
22. 22.🧩 A box has 5 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 35 (c) 12 (d) 42
23. 23.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
25. 25.🧩 Diya bought 5 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹75
26. 26.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
27. 27.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
28. 28.🧩 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
29. 29.🧩 Saanvi bought 4 markers and a bag for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹120 (c) not enough info (d) ₹116
30. 30.🧩 A box has 8 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 56 (c) 15 (d) 63
31. 31.🧩 Tara bought 5 markers and a water bottle for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹125 (b) not enough info (c) ₹26 (d) ₹130
32. 32.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
33. 33.🧩 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
34. 34.🧩 Ishaan is 12 years old. Rohan is 2 years older than Ishaan. How old is Rohan? (a) not enough info (b) 15 (c) 14 (d) 2
35. 35.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
36. 36.🧩 Tara bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹25 (c) ₹20 (d) not enough info
37. 37.🧩 Nisha bought 6 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹150 (b) not enough info (c) ₹30 (d) ₹25
38. 38.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 7 PM (c) 6 PM (d) not enough info
39. 39.🧩 Arjun is 10 years old. Kabir is 7 years older than Arjun. How old is Kabir? (a) 18 (b) not enough info (c) 17 (d) 7
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False

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