Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 144 · 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) never see dogs (c) all dogs are mean (d) that one dog barked
2. 2.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
3. 3.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
4. 4.🧩 Aarav is 12 years old. Tara is 6 years older than Aarav. How old is Tara? (a) 18 (b) 19 (c) not enough info (d) 6
5. 5.🧩 A box has 7 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) not enough info (b) 42 (c) 48 (d) 13
6. 6.🧩 Meera bought 2 markers for ₹30 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹30
7. 7.🧩 A box has 3 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 9 (b) 24 (c) not enough info (d) 18
8. 8.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
10. 10.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
13. 13.🧩 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
14. 14.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
15. 15.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
17. 17.🧩 Nisha is 8 years old. Aarav is 3 years older than Nisha. How old is Aarav? (a) 11 (b) not enough info (c) 12 (d) 3
18. 18.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 5 PM
19. 19.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
20. 20.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
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.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Rohan bought 4 notebooks for ₹220 in all. Each notebook cost the same. What did one notebook cost? (a) ₹220 (b) ₹60 (c) not enough info (d) ₹55
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Aarav bought 6 notebooks for ₹330 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹330 (c) ₹55 (d) not enough info
27. 27.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Vihaan is 9 years old. Ananya is 8 years older than Vihaan. How old is Ananya? (a) 17 (b) 18 (c) not enough info (d) 8
30. 30.🧩 Ishaan bought 2 notebooks and a cap for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹80 (b) not enough info (c) ₹158 (d) ₹160
31. 31.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
32. 32.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
33. 33.🧩 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
34. 34.🧩 Diya is 6 years old. Vihaan is older than Diya. How old is Vihaan? (a) 7 (b) 8 (c) not enough info (d) 11
35. 35.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
37. 37.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
38. 38.🧩 Rohan is 7 years old. Vihaan is 6 years older than Rohan. How old is Vihaan? (a) 6 (b) 14 (c) not enough info (d) 13
39. 39.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
40. 40.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

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