Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 960 · 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 has 5 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 9 (c) 20 (d) 24
2. 2.🐕 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
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
4. 4.📊 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
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
6. 6.🧩 Meera bought 5 pens for ₹175 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹175
7. 7.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
8. 8.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) 56 (c) 14 (d) not enough info
9. 9.🧩 Kabir is 11 years old. Diya is 8 years older than Kabir. How old is Diya? (a) not enough info (b) 20 (c) 19 (d) 8
10. 10.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 6 PM
11. 11.🧩 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
12. 12.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
13. 13.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
14. 14.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
15. 15.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
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.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Meera is 8 years old. Aarav is 7 years older than Meera. How old is Aarav? (a) 15 (b) 7 (c) not enough info (d) 16
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
20. 20.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
21. 21.🧩 Tara is 11 years old. Ananya is 4 years older than Tara. How old is Ananya? (a) 16 (b) 4 (c) 15 (d) not enough info
22. 22.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
23. 23.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
24. 24.🧩 Kabir bought 6 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) ₹25 (c) ₹20 (d) not enough info
25. 25.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
26. 26.🧩 Vihaan bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹20 (c) ₹25 (d) ₹60
27. 27.🧩 Ananya is 6 years old. Ishaan is older than Ananya. How old is Ishaan? (a) 8 (b) 11 (c) not enough info (d) 7
28. 28.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
29. 29.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 8 (b) 20 (c) 16 (d) not enough info
30. 30.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
31. 31.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 8 PM
32. 32.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) 9 (c) 18 (d) not enough info
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
34. 34.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
35. 35.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 48 (b) 13 (c) 40 (d) not enough info
36. 36.🧩 Ishaan bought 3 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹10
37. 37.🧩 Ishaan is 8 years old. Meera is older than Ishaan. How old is Meera? (a) 13 (b) 10 (c) 9 (d) not enough info
38. 38.🧩 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
39. 39.🧩 Diya is 9 years old. Kabir is 2 years older than Diya. How old is Kabir? (a) not enough info (b) 11 (c) 12 (d) 2
40. 40.🧩 Ananya bought 6 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹90

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