Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 736 · 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 of apples has 8 in each row. How many apples are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
2. 2.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
3. 3.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
5. 5.🧩 Meera is 12 years old. Arjun is older than Meera. How old is Arjun? (a) not enough info (b) 14 (c) 13 (d) 17
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.🧩 Tara is 7 years old. Meera is older than Tara. How old is Meera? (a) 9 (b) 12 (c) 8 (d) not enough info
8. 8.🧩 Ananya is 8 years old. Diya is older than Ananya. How old is Diya? (a) 10 (b) 9 (c) 13 (d) not enough info
9. 9.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
10. 10.🧩 Diya is 9 years old. Meera is 8 years older than Diya. How old is Meera? (a) 18 (b) 17 (c) 8 (d) not enough info
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
12. 12.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) yes, mangoes match (d) no, check more
13. 13.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
14. 14.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
15. 15.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
16. 16.🧩 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
17. 17.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
19. 19.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
20. 20.🧩 Arjun bought 6 pens and a cap for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) not enough info (c) ₹114 (d) ₹20
21. 21.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
23. 23.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
24. 24.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 9 PM (d) not enough info
25. 25.🧩 Ishaan is 10 years old. Ananya is older than Ishaan. How old is Ananya? (a) 11 (b) 15 (c) 12 (d) not enough info
26. 26.🧩 Saanvi bought 6 balls for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹50 (b) not enough info (c) ₹300 (d) ₹55
27. 27.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
28. 28.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
30. 30.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
32. 32.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
33. 33.🧩 A box has 8 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 14 (b) 48 (c) not enough info (d) 54
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.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
36. 36.🧩 Ishaan is 8 years old. Arjun is older than Ishaan. How old is Arjun? (a) 13 (b) not enough info (c) 9 (d) 10
37. 37.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
38. 38.🧩 Rohan is 12 years old. Kabir is older than Rohan. How old is Kabir? (a) 17 (b) 13 (c) not enough info (d) 14
39. 39.🧩 Aarav bought 4 mangoes for ₹200 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹55 (c) ₹200 (d) ₹50
40. 40.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False

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