Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 435 · 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) False (b) True
2. 2.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
8. 8.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
9. 9.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 60 (c) 12 (d) not enough info
10. 10.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 2 PM (d) 4 PM
11. 11.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
13. 13.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 7 PM (d) 8 PM
14. 14.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
15. 15.🧩 Saanvi is 8 years old. Arjun is older than Saanvi. How old is Arjun? (a) 9 (b) 10 (c) not enough info (d) 13
16. 16.🧩 Kabir bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹10
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
20. 20.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
22. 22.🧩 Saanvi is 8 years old. Rohan is 3 years older than Saanvi. How old is Rohan? (a) not enough info (b) 3 (c) 12 (d) 11
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
24. 24.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
27. 27.🧩 Saanvi is 11 years old. Ishaan is 3 years older than Saanvi. How old is Ishaan? (a) 15 (b) 3 (c) 14 (d) not enough info
28. 28.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 2 PM
29. 29.🧩 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
30. 30.🧩 Meera is 6 years old. Arjun is older than Meera. How old is Arjun? (a) 11 (b) 7 (c) not enough info (d) 8
31. 31.🧩 Meera bought 4 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹180 (b) ₹50 (c) not enough info (d) ₹45
32. 32.🧩 A box has 5 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 54 (b) not enough info (c) 14 (d) 45
33. 33.📊 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
34. 34.🧩 Meera is 12 years old. Rohan is older than Meera. How old is Rohan? (a) 13 (b) 17 (c) not enough info (d) 14
35. 35.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
36. 36.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
37. 37.🧩 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
38. 38.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
39. 39.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
40. 40.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting

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