Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 229 · 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.🐕 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
2. 2.🧩 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
3. 3.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
4. 4.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
7. 7.🧩 Rohan bought 2 kites for ₹20 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹10 (c) ₹15 (d) ₹20
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
13. 13.🧩 A box has 8 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 13 (b) 40 (c) not enough info (d) 45
14. 14.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
15. 15.🧩 Kabir is 6 years old. Arjun is older than Kabir. How old is Arjun? (a) 11 (b) not enough info (c) 7 (d) 8
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
17. 17.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 7 PM
18. 18.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 30 (c) 36 (d) 11
19. 19.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
20. 20.🥭 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, check more (c) yes, it is certain (d) no mango is sweet
21. 21.📊 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
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
24. 24.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 45 (c) 40 (d) 13
25. 25.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
26. 26.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
27. 27.🧩 Tara bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹40
28. 28.🧩 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
29. 29.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
30. 30.🧩 Ananya is 12 years old. Kabir is older than Ananya. How old is Kabir? (a) not enough info (b) 13 (c) 14 (d) 17
31. 31.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
32. 32.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 7 (b) 16 (c) 12 (d) not enough info
33. 33.🧩 Arjun is 10 years old. Diya is 7 years older than Arjun. How old is Diya? (a) 17 (b) not enough info (c) 18 (d) 7
34. 34.🧩 A box has 8 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 81 (b) 72 (c) 17 (d) not enough info
35. 35.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
36. 36.🧩 Kabir is 7 years old. Diya is 8 years older than Kabir. How old is Diya? (a) 16 (b) not enough info (c) 15 (d) 8
37. 37.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 10 (c) 5 (d) 50
38. 38.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
39. 39.🧩 Arjun bought 2 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) ₹50 (c) ₹45 (d) not enough info
40. 40.🧩 Tara bought 5 markers for ₹75 in all. Each marker cost the same. What did one marker cost? (a) ₹20 (b) ₹15 (c) ₹75 (d) not enough info

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