Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 462 · 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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
2. 2.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) 7 PM (d) not enough info
3. 3.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Diya is 6 years old. Arjun is older than Diya. How old is Arjun? (a) 11 (b) not enough info (c) 7 (d) 8
9. 9.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
11. 11.🧩 Rohan bought 3 mangoes for ₹165 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹55 (c) ₹165 (d) ₹60
12. 12.🧩 A box has 4 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 25 (b) 20 (c) 9 (d) not enough info
13. 13.🧩 Aarav is 7 years old. Diya is older than Aarav. How old is Diya? (a) 9 (b) 12 (c) 8 (d) not enough info
14. 14.🧩 A box has 6 rows of apples, with 4 in each row. How many apples are in the box? (a) 28 (b) not enough info (c) 10 (d) 24
15. 15.🧩 Nisha is 10 years old. Meera is 8 years older than Nisha. How old is Meera? (a) 19 (b) not enough info (c) 18 (d) 8
16. 16.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
17. 17.🧩 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
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
19. 19.🧩 Ananya is 9 years old. Meera is 3 years older than Ananya. How old is Meera? (a) 13 (b) not enough info (c) 3 (d) 12
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Saanvi is 12 years old. Tara is older than Saanvi. How old is Tara? (a) 13 (b) 14 (c) 17 (d) not enough info
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
24. 24.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 8 (b) not enough info (c) 20 (d) 15
25. 25.🧩 Tara is 10 years old. Ishaan is older than Tara. How old is Ishaan? (a) 15 (b) not enough info (c) 11 (d) 12
26. 26.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
27. 27.🧩 Tara bought 2 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) ₹118 (d) ₹60
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.🧩 Tara bought 2 notebooks and a cap for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹88 (b) ₹90 (c) not enough info (d) ₹45
30. 30.🧩 Vihaan is 9 years old. Nisha is older than Vihaan. How old is Nisha? (a) 10 (b) 11 (c) 14 (d) not enough info
31. 31.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
33. 33.🥭 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) no, check more (d) yes, mangoes match
34. 34.🧩 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
35. 35.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 80 (d) 16
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
37. 37.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
38. 38.🧩 Aarav bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) not enough info (c) ₹15 (d) ₹20
39. 39.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) not enough info (b) 12 (c) 6 (d) 60
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence

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