Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 713 · 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.🧩 Arjun is 7 years old. Tara is 8 years older than Arjun. How old is Tara? (a) 16 (b) not enough info (c) 8 (d) 15
2. 2.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
3. 3.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Vihaan bought 4 balls and a bag for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹140 (d) ₹136
6. 6.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
7. 7.🐕 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
8. 8.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
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Rohan is 6 years old. Kabir is older than Rohan. How old is Kabir? (a) 7 (b) 11 (c) not enough info (d) 8
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Kabir bought 5 markers and a cap for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹130 (b) not enough info (c) ₹26 (d) ₹125
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
16. 16.🧩 Ishaan is 6 years old. Ananya is older than Ishaan. How old is Ananya? (a) 11 (b) 8 (c) 7 (d) not enough info
17. 17.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 7 PM
18. 18.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
19. 19.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
20. 20.🧩 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
21. 21.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
22. 22.🧩 Diya is 7 years old. Ananya is 2 years older than Diya. How old is Ananya? (a) 10 (b) not enough info (c) 2 (d) 9
23. 23.🧩 Vihaan bought 3 mangoes and a bag for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹80 (b) ₹26 (c) ₹77 (d) not enough info
24. 24.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
27. 27.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
28. 28.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
30. 30.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
33. 33.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
34. 34.🧩 Meera bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹25 (c) ₹40 (d) not enough info
35. 35.🧩 Kabir bought 2 notebooks and a water bottle for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹118 (b) ₹60 (c) not enough info (d) ₹120
36. 36.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
37. 37.🧩 A box has 4 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 20 (b) 16 (c) not enough info (d) 8
38. 38.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) not enough info (c) 14 (d) 7
39. 39.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
40. 40.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) 20 (b) 25 (c) not enough info (d) 9

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