Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 615 · 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.🧩 A box has 7 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 56 (b) not enough info (c) 14 (d) 49
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
3. 3.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 70 (b) 7 (c) 14 (d) not enough info
4. 4.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
6. 6.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
7. 7.🧩 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
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
10. 10.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 3 PM (c) 7 PM (d) 6 PM
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
12. 12.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) 7 PM (d) not enough info
13. 13.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
14. 14.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
16. 16.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
17. 17.🧩 Kabir is 9 years old. Tara is older than Kabir. How old is Tara? (a) 11 (b) 14 (c) 10 (d) not enough info
18. 18.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
20. 20.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 8 (c) 40 (d) 4
21. 21.🧩 A box has 6 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 36 (d) 42
22. 22.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
23. 23.🥭 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) yes, mangoes match (c) no, check more (d) no mango is sweet
24. 24.🧩 Kabir bought 2 mangoes and a water bottle for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) not enough info (c) ₹100 (d) ₹98
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
26. 26.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
27. 27.🧩 A box has 3 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 20 (b) 8 (c) not enough info (d) 15
28. 28.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) 10 (b) not enough info (c) 28 (d) 21
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
30. 30.🧩 Diya is 11 years old. Kabir is 4 years older than Diya. How old is Kabir? (a) 16 (b) 4 (c) not enough info (d) 15
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.📊 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
33. 33.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
34. 34.🧩 Tara bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹90 (c) not enough info (d) ₹15
35. 35.🧩 A box has 4 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 40 (d) 32
36. 36.🧩 Aarav is 8 years old. Kabir is older than Aarav. How old is Kabir? (a) 10 (b) 9 (c) not enough info (d) 13
37. 37.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
38. 38.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 2 PM
39. 39.🧩 A box has 6 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 35 (b) not enough info (c) 30 (d) 11
40. 40.🧩 Rohan bought 6 balls and a lunch box for ₹260 in all. Each ball cost the same. What did one ball cost? (a) ₹43 (b) ₹254 (c) not enough info (d) ₹260

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