Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 779 · 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.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Meera is 10 years old. Vihaan is older than Meera. How old is Vihaan? (a) not enough info (b) 15 (c) 12 (d) 11
5. 5.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 5 PM (d) 9 PM
6. 6.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) 40 (b) not enough info (c) 13 (d) 45
7. 7.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
8. 8.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
9. 9.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
10. 10.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
12. 12.🧩 Aarav bought 5 markers and a water bottle for ₹225 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) not enough info (c) ₹225 (d) ₹220
13. 13.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Rohan bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹90 (b) ₹20 (c) not enough info (d) ₹15
15. 15.🧩 Arjun is 11 years old. Tara is older than Arjun. How old is Tara? (a) 16 (b) not enough info (c) 12 (d) 13
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Diya bought 4 mangoes and a water bottle for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹170 (b) not enough info (c) ₹166 (d) ₹42
18. 18.📊 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
19. 19.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
20. 20.🧩 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
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Tara is 9 years old. Nisha is older than Tara. How old is Nisha? (a) 14 (b) not enough info (c) 10 (d) 11
24. 24.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
26. 26.🥭 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 mango is sweet (c) yes, it is certain (d) no, check more
27. 27.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
28. 28.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
29. 29.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
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
31. 31.🧩 Saanvi bought 5 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) not enough info (c) ₹15 (d) ₹20
32. 32.🧩 Arjun bought 2 pens and a cap for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) ₹60 (c) ₹118 (d) not enough info
33. 33.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Rohan bought 6 markers for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) not enough info (c) ₹300 (d) ₹50
35. 35.🧩 Arjun bought 5 mangoes and a water bottle for ₹295 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹295 (c) ₹59 (d) ₹290
36. 36.🧩 Ishaan is 9 years old. Saanvi is older than Ishaan. How old is Saanvi? (a) 14 (b) 11 (c) 10 (d) not enough info
37. 37.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
38. 38.🧩 Ishaan bought 2 balls for ₹30 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) not enough info (c) ₹30 (d) ₹20
39. 39.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 9 PM (c) 10 PM (d) not enough info
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False

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