Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 621 · 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) enough evidence (b) not enough evidence
2. 2.🧩 Kabir is 10 years old. Aarav is older than Kabir. How old is Aarav? (a) 11 (b) 15 (c) 12 (d) not enough info
3. 3.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
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.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
6. 6.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
8. 8.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 8 PM (c) 5 PM (d) not enough info
9. 9.🧩 Diya bought 4 balls and a bag for ₹210 in all. Each ball cost the same. What did one ball cost? (a) ₹210 (b) ₹52 (c) not enough info (d) ₹206
10. 10.🥭 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) no, check more (c) yes, it is certain (d) yes, mangoes match
11. 11.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
12. 12.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
13. 13.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 25 (b) 10 (c) 30 (d) not enough info
14. 14.🧩 Saanvi is 9 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 11 (b) 14 (c) not enough info (d) 10
15. 15.🧩 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
16. 16.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
17. 17.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
18. 18.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 7 PM (c) 6 PM (d) not enough info
19. 19.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
20. 20.🧩 Arjun bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹180 (c) not enough info (d) ₹35
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
22. 22.🧩 Saanvi is 6 years old. Aarav is older than Saanvi. How old is Aarav? (a) not enough info (b) 11 (c) 7 (d) 8
23. 23.📊 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
24. 24.🧩 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
25. 25.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
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
27. 27.🧩 Diya bought 5 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹200 (b) ₹40 (c) not enough info (d) ₹45
28. 28.🧩 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
29. 29.🧩 A box has 4 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 16 (b) not enough info (c) 20 (d) 8
30. 30.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
31. 31.🧩 Rohan bought 2 mangoes and a lunch box for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹120 (b) ₹60 (c) not enough info (d) ₹118
32. 32.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 20 (b) 8 (c) not enough info (d) 15
33. 33.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
34. 34.🧩 A box has 6 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 24 (c) 28 (d) 10
35. 35.🧩 Meera bought 5 mangoes and a lunch box for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹100 (c) ₹95 (d) not enough info
36. 36.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
37. 37.🧩 Nisha bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹15 (c) ₹10 (d) not enough info
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
40. 40.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False

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