Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 445 · 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 9 years old. Aarav is 6 years older than Arjun. How old is Aarav? (a) 16 (b) 6 (c) not enough info (d) 15
2. 2.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
4. 4.🧩 Ananya bought 4 mangoes and a water bottle for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹200 (c) not enough info (d) ₹196
5. 5.🧩 Ananya is 8 years old. Meera is 6 years older than Ananya. How old is Meera? (a) not enough info (b) 14 (c) 6 (d) 15
6. 6.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Meera is 7 years old. Kabir is older than Meera. How old is Kabir? (a) not enough info (b) 12 (c) 9 (d) 8
9. 9.🧩 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
10. 10.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
13. 13.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 30 (b) 25 (c) not enough info (d) 10
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
15. 15.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
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Aarav bought 5 pens and a bag for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹155 (b) ₹160 (c) ₹32 (d) not enough info
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Ananya is 11 years old. Diya is 9 years older than Ananya. How old is Diya? (a) 9 (b) 21 (c) not enough info (d) 20
20. 20.🧩 Vihaan bought 3 kites and a cap for ₹180 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹180 (c) ₹177 (d) ₹60
21. 21.🧩 Nisha is 12 years old. Diya is older than Nisha. How old is Diya? (a) 14 (b) 13 (c) not enough info (d) 17
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
23. 23.🧩 A box has 8 rows of apples, with 9 in each row. How many apples are in the box? (a) not enough info (b) 17 (c) 72 (d) 81
24. 24.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
25. 25.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
26. 26.🧩 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
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
28. 28.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
29. 29.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 11 (c) 35 (d) not enough info
30. 30.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 6 PM (d) 5 PM
31. 31.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
32. 32.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
33. 33.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 7 PM
34. 34.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
35. 35.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
36. 36.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Aarav is 12 years old. Arjun is 8 years older than Aarav. How old is Arjun? (a) 20 (b) 21 (c) not enough info (d) 8
38. 38.🧩 Meera is 7 years old. Kabir is 2 years older than Meera. How old is Kabir? (a) 10 (b) 2 (c) not enough info (d) 9
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
40. 40.🧩 Nisha is 12 years old. Tara is 2 years older than Nisha. How old is Tara? (a) 14 (b) 2 (c) not enough info (d) 15

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