Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 792 · 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.🧩 Arjun is 8 years old. Tara is older than Arjun. How old is Tara? (a) 10 (b) 13 (c) not enough info (d) 9
2. 2.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 15 (c) 20 (d) 8
3. 3.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 4 PM
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
7. 7.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
8. 8.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
10. 10.🧩 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
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
16. 16.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
20. 20.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 7 PM (c) not enough info (d) 6 PM
21. 21.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 8 PM (c) not enough info (d) 7 PM
22. 22.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 9 (b) 90 (c) 18 (d) not enough info
23. 23.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 18 (c) not enough info (d) 90
24. 24.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 5 PM (c) not enough info (d) 8 PM
25. 25.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Saanvi is 11 years old. Kabir is older than Saanvi. How old is Kabir? (a) 16 (b) 12 (c) 13 (d) not enough info
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
28. 28.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
30. 30.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 6 (c) not enough info (d) 60
31. 31.🧩 Kabir is 9 years old. Meera is 8 years older than Kabir. How old is Meera? (a) 18 (b) not enough info (c) 17 (d) 8
32. 32.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
33. 33.🧩 Saanvi is 8 years old. Diya is older than Saanvi. How old is Diya? (a) 10 (b) 13 (c) 9 (d) not enough info
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
35. 35.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
36. 36.🧩 Rohan bought 2 pens and a bag for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹58 (c) ₹30 (d) not enough info
37. 37.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
38. 38.🧩 Ananya is 7 years old. Kabir is 3 years older than Ananya. How old is Kabir? (a) not enough info (b) 3 (c) 11 (d) 10
39. 39.🧩 A box has 4 rows of apples, with 9 in each row. How many apples are in the box? (a) 45 (b) 13 (c) 36 (d) not enough info
40. 40.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results

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