Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 78 · 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.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
5. 5.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 32 (d) 36
6. 6.🧩 Nisha is 11 years old. Ishaan is older than Nisha. How old is Ishaan? (a) 12 (b) 16 (c) not enough info (d) 13
7. 7.🧩 Nisha is 10 years old. Vihaan is 3 years older than Nisha. How old is Vihaan? (a) 14 (b) 13 (c) not enough info (d) 3
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Aarav bought 5 pens for ₹225 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹225 (c) ₹45 (d) not enough info
10. 10.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 27 (b) 36 (c) not enough info (d) 12
11. 11.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
12. 12.🧩 Aarav bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹20 (c) ₹25 (d) not enough info
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Diya is 12 years old. Tara is 2 years older than Diya. How old is Tara? (a) not enough info (b) 2 (c) 14 (d) 15
15. 15.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
16. 16.🧩 Aarav bought 6 pens and a bag for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹41 (b) not enough info (c) ₹250 (d) ₹244
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
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.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
20. 20.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
21. 21.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
23. 23.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 9 (b) not enough info (c) 20 (d) 24
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Rohan bought 2 mangoes and a cap for ₹160 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹80 (c) ₹160 (d) ₹158
27. 27.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
28. 28.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 4 PM (d) 7 PM
29. 29.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
30. 30.🧩 A box has 3 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 20 (c) 15 (d) 8
31. 31.🧩 Diya bought 2 markers and a water bottle for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹78 (b) ₹80 (c) ₹40 (d) not enough info
32. 32.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 4 PM (c) 2 PM (d) not enough info
33. 33.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) not enough info (b) 18 (c) 90 (d) 9
34. 34.🧩 Arjun is 8 years old. Ananya is 4 years older than Arjun. How old is Ananya? (a) 13 (b) 12 (c) not enough info (d) 4
35. 35.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
36. 36.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
38. 38.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
39. 39.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
40. 40.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

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