Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 92 · 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 tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
2. 2.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
4. 4.🧩 Tara is 6 years old. Vihaan is older than Tara. How old is Vihaan? (a) not enough info (b) 8 (c) 11 (d) 7
5. 5.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
8. 8.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
9. 9.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 16 (d) 80
10. 10.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
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Saanvi is 9 years old. Rohan is older than Saanvi. How old is Rohan? (a) 11 (b) 10 (c) not enough info (d) 14
14. 14.🧩 Ananya is 7 years old. Diya is older than Ananya. How old is Diya? (a) 12 (b) 9 (c) 8 (d) not enough info
15. 15.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
16. 16.🧩 Aarav bought 5 markers and a bag for ₹165 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹160 (c) ₹165 (d) ₹33
17. 17.🧩 Vihaan bought 3 markers for ₹75 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹75 (c) ₹30 (d) ₹25
18. 18.🧩 Diya is 6 years old. Kabir is older than Diya. How old is Kabir? (a) 11 (b) 8 (c) not enough info (d) 7
19. 19.🧩 Ananya is 12 years old. Diya is older than Ananya. How old is Diya? (a) not enough info (b) 17 (c) 14 (d) 13
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
21. 21.🧩 Saanvi bought 3 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹15 (c) not enough info (d) ₹10
22. 22.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
23. 23.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) 4 PM (d) not enough info
24. 24.🧩 Aarav bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹25 (d) ₹40
25. 25.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
26. 26.🧩 Ishaan bought 6 mangoes for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹300 (b) ₹55 (c) ₹50 (d) not enough info
27. 27.🧩 Diya bought 4 mangoes and a water bottle for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹156 (c) not enough info (d) ₹160
28. 28.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 8 PM
29. 29.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
32. 32.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Diya bought 6 mangoes and a cap for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹120 (c) ₹114 (d) ₹20
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
36. 36.🥭 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, mangoes match (d) yes, it is certain
37. 37.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
38. 38.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Arjun is 10 years old. Kabir is older than Arjun. How old is Kabir? (a) 11 (b) 15 (c) 12 (d) not enough info
40. 40.🧩 A box has 8 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 12 (b) 32 (c) not enough info (d) 36

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