Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 920 · 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.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Aarav bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹65 (c) ₹120 (d) ₹60
3. 3.🧩 A box has 3 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 18 (b) 24 (c) not enough info (d) 9
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 8 PM (c) 9 PM (d) not enough info
6. 6.🧩 Ananya bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹55 (d) ₹110
7. 7.🧩 Kabir is 9 years old. Nisha is older than Kabir. How old is Nisha? (a) 10 (b) 11 (c) 14 (d) not enough info
8. 8.🧩 Tara bought 4 mangoes and a cap for ₹210 in all. Each mango cost the same. What did one mango cost? (a) ₹52 (b) not enough info (c) ₹206 (d) ₹210
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
11. 11.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
12. 12.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
13. 13.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 54 (c) 14 (d) 48
14. 14.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
15. 15.🧩 Kabir bought 4 pens and a lunch box for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹210 (b) ₹206 (c) not enough info (d) ₹52
16. 16.🧩 Ananya is 6 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 8 (b) 7 (c) 11 (d) not enough info
17. 17.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
19. 19.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 64 (b) 72 (c) 16 (d) not enough info
20. 20.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
21. 21.🥭 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) no mango is sweet (d) yes, it is certain
22. 22.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
23. 23.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
24. 24.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) not enough info (c) 56 (d) 14
25. 25.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
26. 26.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
27. 27.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 5 PM
28. 28.🧩 Ishaan is 6 years old. Rohan is older than Ishaan. How old is Rohan? (a) not enough info (b) 7 (c) 11 (d) 8
29. 29.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
30. 30.🧩 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
31. 31.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 7 PM (d) 8 PM
32. 32.🧩 Ishaan bought 3 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹65 (b) ₹180 (c) not enough info (d) ₹60
33. 33.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
35. 35.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
36. 36.🧩 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
37. 37.🧩 A box has 3 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 12 (b) 27 (c) 36 (d) not enough info
38. 38.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 8 (d) 15
39. 39.🧩 Aarav bought 4 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹10 (b) ₹40 (c) not enough info (d) ₹15
40. 40.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 3 PM

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