Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 568 · 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.🧩 Ishaan is 9 years old. Tara is 4 years older than Ishaan. How old is Tara? (a) not enough info (b) 4 (c) 13 (d) 14
2. 2.🧩 Meera is 12 years old. Diya is older than Meera. How old is Diya? (a) not enough info (b) 13 (c) 14 (d) 17
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Diya is 10 years old. Nisha is 7 years older than Diya. How old is Nisha? (a) 18 (b) 7 (c) 17 (d) not enough info
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
6. 6.🧩 Aarav bought 6 pens and a cap for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹240 (b) ₹40 (c) not enough info (d) ₹234
7. 7.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
8. 8.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
9. 9.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
10. 10.🧩 A box has 8 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 32 (b) not enough info (c) 36 (d) 12
11. 11.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 5 PM (c) not enough info (d) 8 PM
12. 12.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
14. 14.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
15. 15.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
16. 16.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Arjun bought 3 pens and a water bottle for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹177 (b) not enough info (c) ₹60 (d) ₹180
19. 19.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 24 (b) 28 (c) 10 (d) not enough info
20. 20.🧩 A box has 5 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 54 (b) not enough info (c) 45 (d) 14
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
22. 22.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
26. 26.🧩 Kabir bought 5 markers and a cap for ₹145 in all. Each marker cost the same. What did one marker cost? (a) ₹29 (b) ₹145 (c) ₹140 (d) not enough info
27. 27.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 6 PM
28. 28.🧩 Diya is 6 years old. Ishaan is 2 years older than Diya. How old is Ishaan? (a) 2 (b) 8 (c) 9 (d) not enough info
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
30. 30.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
32. 32.🧩 A box has 7 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 11 (c) 32 (d) 28
33. 33.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
34. 34.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
37. 37.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
38. 38.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
39. 39.🧩 Tara bought 2 kites and a cap for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹150 (b) ₹148 (c) ₹75 (d) not enough info
40. 40.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 10 PM

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