Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 135 · 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.🧩 Meera is 7 years old. Vihaan is older than Meera. How old is Vihaan? (a) 12 (b) 8 (c) not enough info (d) 9
2. 2.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
3. 3.🐕 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
4. 4.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
5. 5.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 5 PM
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
7. 7.🧩 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
8. 8.🧩 Nisha is 11 years old. Ishaan is 9 years older than Nisha. How old is Ishaan? (a) not enough info (b) 21 (c) 20 (d) 9
9. 9.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 12 (c) not enough info (d) 60
10. 10.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
11. 11.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
12. 12.🧩 Diya bought 5 markers and a water bottle for ₹145 in all. Each marker cost the same. What did one marker cost? (a) ₹29 (b) ₹140 (c) not enough info (d) ₹145
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.🧩 A box has 3 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 32 (c) 11 (d) 24
16. 16.🧩 Kabir bought 4 pens and a water bottle for ₹330 in all. Each pen cost the same. What did one pen cost? (a) ₹330 (b) not enough info (c) ₹326 (d) ₹82
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.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
20. 20.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 5 PM
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
22. 22.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
23. 23.🧩 Kabir bought 3 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹65 (c) ₹60 (d) ₹180
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
25. 25.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 5 PM
26. 26.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Tara is 6 years old. Ananya is older than Tara. How old is Ananya? (a) 11 (b) 8 (c) 7 (d) not enough info
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
30. 30.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
32. 32.🧩 A box has 4 rows of apples, with 7 in each row. How many apples are in the box? (a) 11 (b) 35 (c) not enough info (d) 28
33. 33.🧩 Meera bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹20 (c) ₹60 (d) ₹15
34. 34.🧩 Meera bought 5 kites for ₹175 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹175
35. 35.🧩 A box has 3 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) not enough info (b) 21 (c) 28 (d) 10
36. 36.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Diya is 9 years old. Kabir is 4 years older than Diya. How old is Kabir? (a) 13 (b) 14 (c) not enough info (d) 4
38. 38.🧩 Diya bought 2 kites and a lunch box for ₹130 in all. Each kite cost the same. What did one kite cost? (a) ₹130 (b) ₹128 (c) ₹65 (d) not enough info
39. 39.🧩 Saanvi is 6 years old. Kabir is older than Saanvi. How old is Kabir? (a) 7 (b) not enough info (c) 11 (d) 8
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False

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