Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 222 · 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.🧩 Tara is 6 years old. Nisha is older than Tara. How old is Nisha? (a) 8 (b) not enough info (c) 11 (d) 7
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
3. 3.🧩 A box has 6 rows of guavas, with 8 in each row. How many guavas are in the box? (a) not enough info (b) 56 (c) 48 (d) 14
4. 4.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 6 PM (d) 10 PM
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Meera is 10 years old. Tara is older than Meera. How old is Tara? (a) 15 (b) not enough info (c) 11 (d) 12
8. 8.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Diya bought 5 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹300
11. 11.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 50 (b) not enough info (c) 10 (d) 5
12. 12.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) yes, mangoes match (d) no, check more
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
14. 14.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
15. 15.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
16. 16.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
17. 17.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
18. 18.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 5 PM
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
20. 20.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 5 PM
21. 21.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 8 PM
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Arjun bought 5 notebooks and a water bottle for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹130 (b) not enough info (c) ₹26 (d) ₹125
24. 24.🧩 Diya is 10 years old. Aarav is older than Diya. How old is Aarav? (a) 12 (b) 11 (c) 15 (d) not enough info
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
28. 28.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
30. 30.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) 8 PM (d) not enough info
31. 31.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) not enough info (b) 7 (c) 14 (d) 70
32. 32.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
33. 33.🧩 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
34. 34.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
35. 35.🧩 Meera bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) ₹65 (c) not enough info (d) ₹60
36. 36.🧩 Vihaan bought 2 kites and a lunch box for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) ₹138 (c) not enough info (d) ₹70
37. 37.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
38. 38.🧩 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
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
40. 40.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence

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