Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 732 · 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.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 24 (c) 32 (d) 11
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Saanvi bought 4 mangoes for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹160 (b) ₹45 (c) not enough info (d) ₹40
4. 4.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 49 (d) 56
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
6. 6.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
7. 7.🧩 Arjun is 11 years old. Saanvi is 4 years older than Arjun. How old is Saanvi? (a) not enough info (b) 16 (c) 4 (d) 15
8. 8.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) not enough info (c) 10 (d) 50
9. 9.🧩 Diya is 9 years old. Rohan is 5 years older than Diya. How old is Rohan? (a) not enough info (b) 15 (c) 14 (d) 5
10. 10.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
11. 11.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 11 (c) 36 (d) 30
12. 12.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 8 (b) 16 (c) 20 (d) not enough info
13. 13.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
14. 14.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Nisha is 11 years old. Vihaan is older than Nisha. How old is Vihaan? (a) 16 (b) 12 (c) 13 (d) not enough info
16. 16.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 9 PM (c) 7 PM (d) 8 PM
17. 17.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 42 (c) 13 (d) 48
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
19. 19.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 9 (b) not enough info (c) 20 (d) 24
20. 20.🧩 Arjun is 11 years old. Nisha is 8 years older than Arjun. How old is Nisha? (a) 19 (b) 8 (c) not enough info (d) 20
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
23. 23.🧩 Nisha bought 6 pens and a water bottle for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹174 (b) not enough info (c) ₹180 (d) ₹30
24. 24.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) not enough info (c) 8 (d) 4
25. 25.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
26. 26.🧩 Ananya bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹25 (c) not enough info (d) ₹20
27. 27.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
28. 28.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
29. 29.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
30. 30.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Rohan is 6 years old. Saanvi is older than Rohan. How old is Saanvi? (a) 8 (b) not enough info (c) 11 (d) 7
32. 32.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
33. 33.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
35. 35.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
36. 36.🧩 Ishaan is 9 years old. Nisha is older than Ishaan. How old is Nisha? (a) 14 (b) 10 (c) not enough info (d) 11
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
39. 39.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
40. 40.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM

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