Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 293 · 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.🧩 Meera bought 6 markers for ₹360 in all. Each marker cost the same. What did one marker cost? (a) ₹360 (b) ₹65 (c) not enough info (d) ₹60
2. 2.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
3. 3.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
4. 4.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 9 PM
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
9. 9.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 7 (d) 70
10. 10.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
11. 11.🧩 Diya is 11 years old. Ishaan is older than Diya. How old is Ishaan? (a) 16 (b) 13 (c) 12 (d) not enough info
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
13. 13.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
14. 14.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
15. 15.🧩 A box has 3 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 12 (b) 27 (c) 36 (d) not enough info
16. 16.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
17. 17.🧩 Kabir bought 3 balls and a lunch box for ₹95 in all. Each ball cost the same. What did one ball cost? (a) ₹31 (b) ₹95 (c) ₹92 (d) not enough info
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Nisha is 9 years old. Saanvi is older than Nisha. How old is Saanvi? (a) 11 (b) not enough info (c) 10 (d) 14
20. 20.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
21. 21.🧩 Vihaan bought 5 notebooks and a lunch box for ₹230 in all. Each notebook cost the same. What did one notebook cost? (a) ₹225 (b) ₹46 (c) ₹230 (d) not enough info
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Ishaan bought 3 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹25 (c) ₹20 (d) ₹60
24. 24.🧩 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
25. 25.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
26. 26.🧩 Kabir is 12 years old. Saanvi is older than Kabir. How old is Saanvi? (a) not enough info (b) 14 (c) 17 (d) 13
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
28. 28.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 6 PM
29. 29.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
31. 31.🧩 A box has 6 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 35 (b) 30 (c) 11 (d) not enough info
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
33. 33.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
34. 34.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
35. 35.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 30 (b) not enough info (c) 10 (d) 25
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
37. 37.🧩 Nisha bought 6 mangoes for ₹210 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) not enough info (c) ₹210 (d) ₹40
38. 38.🧩 Aarav bought 3 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹137 (c) ₹46 (d) ₹140
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
40. 40.🧩 Rohan bought 6 kites and a water bottle for ₹350 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹350 (c) ₹344 (d) ₹58

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