Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 416 · 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 tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
2. 2.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
3. 3.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
4. 4.🧩 Diya bought 2 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) not enough info (c) ₹20 (d) ₹25
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.📊 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
7. 7.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
8. 8.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 16 (d) 20
9. 9.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
10. 10.🧩 Aarav is 12 years old. Ishaan is 8 years older than Aarav. How old is Ishaan? (a) 8 (b) not enough info (c) 20 (d) 21
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
13. 13.🧩 Rohan is 8 years old. Vihaan is older than Rohan. How old is Vihaan? (a) not enough info (b) 9 (c) 13 (d) 10
14. 14.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
15. 15.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
16. 16.🧩 A box has 7 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 32 (b) 28 (c) 11 (d) not enough info
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
19. 19.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 13 (b) 48 (c) 42 (d) not enough info
20. 20.🧩 Ishaan bought 6 markers and a water bottle for ₹370 in all. Each marker cost the same. What did one marker cost? (a) ₹364 (b) ₹370 (c) not enough info (d) ₹61
21. 21.🧩 Ananya is 10 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 12 (b) 15 (c) 11 (d) not enough info
22. 22.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Arjun is 6 years old. Rohan is 7 years older than Arjun. How old is Rohan? (a) not enough info (b) 13 (c) 14 (d) 7
25. 25.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
26. 26.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
27. 27.🧩 Ananya bought 6 kites and a water bottle for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹26 (b) not enough info (c) ₹160 (d) ₹154
28. 28.🧩 Ananya bought 3 pens and a water bottle for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹162 (b) not enough info (c) ₹55 (d) ₹165
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Meera is 6 years old. Rohan is 3 years older than Meera. How old is Rohan? (a) 3 (b) 10 (c) not enough info (d) 9
31. 31.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
32. 32.🧩 A box has 8 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) not enough info (b) 17 (c) 81 (d) 72
33. 33.🧩 Rohan bought 4 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹200 (c) ₹55 (d) not enough info
34. 34.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
35. 35.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
36. 36.🧩 Rohan bought 5 markers for ₹275 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹275 (c) ₹55 (d) not enough info
37. 37.🧩 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
38. 38.🧩 Aarav bought 5 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹100 (b) ₹25 (c) not enough info (d) ₹20
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
40. 40.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 6 PM

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