Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 802 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
3. 3.🧩 Rohan bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹100
4. 4.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
5. 5.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) 4 (c) not enough info (d) 40
6. 6.🧩 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
7. 7.🧩 Saanvi bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹45 (c) not enough info (d) ₹240
8. 8.🧩 Saanvi bought 6 pens and a lunch box for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹234 (c) ₹240 (d) not enough info
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
10. 10.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
11. 11.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 5 PM
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
13. 13.🧩 A box has 8 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 56 (c) 15 (d) 63
14. 14.🧩 Nisha bought 4 markers and a lunch box for ₹310 in all. Each marker cost the same. What did one marker cost? (a) ₹77 (b) ₹310 (c) not enough info (d) ₹306
15. 15.🧩 Saanvi bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) not enough info (c) ₹75 (d) ₹30
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
17. 17.🧩 Ananya bought 3 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹180 (c) ₹60 (d) not enough info
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
19. 19.🧩 Aarav bought 4 balls for ₹220 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹60 (c) ₹55 (d) ₹220
20. 20.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
21. 21.🧩 A box has 7 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 16 (b) not enough info (c) 72 (d) 63
22. 22.🧩 Arjun is 11 years old. Rohan is older than Arjun. How old is Rohan? (a) 12 (b) not enough info (c) 16 (d) 13
23. 23.🥭 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) yes, it is certain (c) no, check more (d) no mango is sweet
24. 24.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
27. 27.🧩 Ishaan is 8 years old. Rohan is older than Ishaan. How old is Rohan? (a) 10 (b) 13 (c) not enough info (d) 9
28. 28.🧩 Diya bought 4 notebooks and a water bottle for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹116 (b) ₹30 (c) not enough info (d) ₹120
29. 29.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
30. 30.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
31. 31.🧩 Diya bought 3 kites and a lunch box for ₹175 in all. Each kite cost the same. What did one kite cost? (a) ₹175 (b) not enough info (c) ₹172 (d) ₹58
32. 32.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
33. 33.🧩 Aarav bought 6 pens and a water bottle for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) not enough info (c) ₹144 (d) ₹25
34. 34.🐕 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
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
37. 37.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 5 PM
38. 38.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
39. 39.🧩 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
40. 40.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) not enough info (c) 70 (d) 7

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