Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 666 · 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.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 6 PM (c) 4 PM (d) not enough info
2. 2.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
8. 8.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
9. 9.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
11. 11.🧩 Aarav is 6 years old. Ananya is older than Aarav. How old is Ananya? (a) not enough info (b) 8 (c) 7 (d) 11
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
14. 14.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
15. 15.🧩 Diya bought 4 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹25 (d) ₹100
16. 16.🧩 Diya is 8 years old. Kabir is 9 years older than Diya. How old is Kabir? (a) 17 (b) not enough info (c) 9 (d) 18
17. 17.🧩 Nisha bought 5 balls and a cap for ₹290 in all. Each ball cost the same. What did one ball cost? (a) ₹285 (b) ₹58 (c) not enough info (d) ₹290
18. 18.🧩 Meera is 6 years old. Vihaan is older than Meera. How old is Vihaan? (a) 8 (b) 7 (c) not enough info (d) 11
19. 19.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
20. 20.🧩 Kabir is 12 years old. Tara is older than Kabir. How old is Tara? (a) 13 (b) not enough info (c) 14 (d) 17
21. 21.🧩 Rohan is 7 years old. Tara is older than Rohan. How old is Tara? (a) 9 (b) 12 (c) 8 (d) not enough info
22. 22.🧩 Ishaan is 12 years old. Rohan is 2 years older than Ishaan. How old is Rohan? (a) 2 (b) not enough info (c) 15 (d) 14
23. 23.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
24. 24.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
25. 25.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 3 PM (d) 6 PM
26. 26.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
27. 27.🧩 Diya bought 4 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹35 (c) ₹120 (d) ₹30
28. 28.🧩 Vihaan is 11 years old. Ananya is older than Vihaan. How old is Ananya? (a) 13 (b) 16 (c) not enough info (d) 12
29. 29.🧩 Rohan is 8 years old. Meera is 4 years older than Rohan. How old is Meera? (a) 4 (b) not enough info (c) 12 (d) 13
30. 30.🧩 Kabir is 10 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 12 (b) not enough info (c) 15 (d) 11
31. 31.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
32. 32.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
33. 33.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) not enough info (c) 10 (d) 5
34. 34.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
35. 35.🧩 Aarav is 9 years old. Tara is 9 years older than Aarav. How old is Tara? (a) 18 (b) 9 (c) 19 (d) not enough info
36. 36.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 32 (c) 36 (d) 12
37. 37.🧩 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
38. 38.🥭 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
39. 39.🧩 Diya is 6 years old. Arjun is 8 years older than Diya. How old is Arjun? (a) 8 (b) 15 (c) not enough info (d) 14
40. 40.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) 70 (c) not enough info (d) 7

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