Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 248 · 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.🧩 Nisha bought 2 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹50 (c) ₹30 (d) not enough info
2. 2.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
6. 6.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
7. 7.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
8. 8.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Meera bought 4 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹60 (c) ₹20 (d) ₹15
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Arjun is 8 years old. Vihaan is 4 years older than Arjun. How old is Vihaan? (a) 13 (b) not enough info (c) 12 (d) 4
12. 12.🧩 Diya is 11 years old. Ishaan is 5 years older than Diya. How old is Ishaan? (a) 17 (b) not enough info (c) 16 (d) 5
13. 13.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 3 PM (d) 7 PM
14. 14.🧩 Ishaan bought 2 balls and a water bottle for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹88 (c) ₹90 (d) not enough info
15. 15.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 28 (c) 10 (d) 24
16. 16.🧩 Tara is 11 years old. Vihaan is 5 years older than Tara. How old is Vihaan? (a) 17 (b) 5 (c) 16 (d) not enough info
17. 17.🧩 Rohan is 6 years old. Ananya is 7 years older than Rohan. How old is Ananya? (a) not enough info (b) 7 (c) 14 (d) 13
18. 18.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
20. 20.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 3 PM (d) 5 PM
21. 21.🧩 A box has 4 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 24 (d) 30
22. 22.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
23. 23.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
24. 24.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 4 PM
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
28. 28.🧩 Aarav bought 2 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹80 (c) ₹45 (d) ₹40
29. 29.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
30. 30.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
32. 32.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) not enough info (b) 54 (c) 15 (d) 63
33. 33.🧩 Diya bought 2 balls and a water bottle for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) not enough info (c) ₹118 (d) ₹60
34. 34.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) not enough info (c) 10 (d) 50
35. 35.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
36. 36.🧩 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
37. 37.🧩 Diya is 6 years old. Tara is 3 years older than Diya. How old is Tara? (a) not enough info (b) 3 (c) 10 (d) 9
38. 38.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
40. 40.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM

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