Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 93 · 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 tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
4. 4.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 7 PM
5. 5.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
6. 6.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
7. 7.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
8. 8.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
11. 11.🥭 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) yes, it is certain (c) no mango is sweet (d) no, check more
12. 12.🧩 Rohan bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹10
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
15. 15.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
16. 16.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) 18 (c) 9 (d) not enough info
17. 17.🧩 Aarav is 9 years old. Saanvi is 6 years older than Aarav. How old is Saanvi? (a) 6 (b) not enough info (c) 16 (d) 15
18. 18.🧩 Tara is 10 years old. Aarav is older than Tara. How old is Aarav? (a) not enough info (b) 11 (c) 15 (d) 12
19. 19.🧩 Vihaan is 12 years old. Rohan is 2 years older than Vihaan. How old is Rohan? (a) 2 (b) 15 (c) not enough info (d) 14
20. 20.🧩 Ananya bought 5 pens and a bag for ₹365 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹365 (c) ₹360 (d) ₹73
21. 21.🧩 Aarav is 7 years old. Meera is older than Aarav. How old is Meera? (a) 12 (b) 9 (c) 8 (d) not enough info
22. 22.🧩 Nisha bought 3 balls and a cap for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹157 (b) ₹53 (c) not enough info (d) ₹160
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Tara bought 2 mangoes and a cap for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹38 (c) not enough info (d) ₹20
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
26. 26.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 3 PM
27. 27.🧩 Tara is 10 years old. Rohan is 4 years older than Tara. How old is Rohan? (a) not enough info (b) 14 (c) 4 (d) 15
28. 28.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
29. 29.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
30. 30.🧩 A box has 3 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 32 (b) not enough info (c) 24 (d) 11
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
32. 32.🧩 Ananya bought 2 pens and a bag for ₹80 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹40 (c) ₹78 (d) ₹80
33. 33.🧩 Aarav bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) not enough info (c) ₹40 (d) ₹45
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
36. 36.🧩 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
37. 37.🧩 Tara bought 4 kites for ₹140 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹140
38. 38.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 2 PM (d) 6 PM
39. 39.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
40. 40.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) 20 (b) 8 (c) not enough info (d) 16

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