Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 394 · 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 of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
2. 2.🧩 Rohan bought 2 pens and a water bottle for ₹100 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹98 (c) ₹50 (d) ₹100
3. 3.📊 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
4. 4.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
5. 5.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) 20 (b) 8 (c) not enough info (d) 16
8. 8.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
9. 9.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Arjun is 6 years old. Kabir is 3 years older than Arjun. How old is Kabir? (a) 9 (b) 10 (c) not enough info (d) 3
12. 12.🧩 Diya is 7 years old. Saanvi is 6 years older than Diya. How old is Saanvi? (a) 14 (b) 13 (c) 6 (d) not enough info
13. 13.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 9 (c) 24 (d) 20
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
15. 15.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) 20 (b) 9 (c) not enough info (d) 25
16. 16.🧩 Saanvi bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹55 (c) ₹60 (d) ₹275
17. 17.🧩 Saanvi bought 3 markers for ₹135 in all. Each marker cost the same. What did one marker cost? (a) ₹135 (b) ₹45 (c) ₹50 (d) not enough info
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
20. 20.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 9 PM (d) 8 PM
21. 21.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
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
23. 23.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM
24. 24.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 2 PM (d) not enough info
25. 25.🥭 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) yes, it is certain (c) no, check more (d) no mango is sweet
26. 26.🧩 A box has 7 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 56 (b) 64 (c) 15 (d) not enough info
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Aarav bought 4 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹120
29. 29.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
30. 30.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 12 (b) 36 (c) 32 (d) not enough info
31. 31.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 3 PM (d) not enough info
32. 32.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 5 PM
33. 33.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Rohan bought 2 mangoes and a water bottle for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹98 (b) ₹100 (c) not enough info (d) ₹50
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Vihaan is 6 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) not enough info (b) 8 (c) 11 (d) 7
39. 39.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
40. 40.🧩 A box has 8 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 36 (b) 12 (c) not enough info (d) 32

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