Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 688 · 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.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) not enough info (c) 5 PM (d) 7 PM
2. 2.🧩 Meera bought 2 markers and a cap for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) not enough info (c) ₹110 (d) ₹108
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Vihaan bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹20 (c) ₹15 (d) not enough info
5. 5.🥭 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) yes, it is certain (c) no, check more (d) yes, mangoes match
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
7. 7.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
10. 10.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
11. 11.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
12. 12.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
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
14. 14.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 48 (c) 40 (d) 13
15. 15.🧩 A box has 3 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 8 (b) 20 (c) not enough info (d) 15
16. 16.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
19. 19.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
20. 20.🧩 Diya is 12 years old. Ananya is older than Diya. How old is Ananya? (a) 13 (b) 14 (c) not enough info (d) 17
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Nisha bought 3 pens and a bag for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹165 (b) not enough info (c) ₹55 (d) ₹162
23. 23.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
24. 24.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 8 (d) 20
25. 25.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
26. 26.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 2 PM
27. 27.🧩 Vihaan bought 4 balls and a cap for ₹90 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹86 (c) ₹90 (d) ₹22
28. 28.🧩 Tara is 7 years old. Arjun is older than Tara. How old is Arjun? (a) 12 (b) 8 (c) not enough info (d) 9
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
31. 31.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
32. 32.🧩 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
33. 33.🧩 Nisha is 10 years old. Saanvi is older than Nisha. How old is Saanvi? (a) not enough info (b) 15 (c) 12 (d) 11
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Saanvi bought 5 balls for ₹175 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) ₹40 (c) not enough info (d) ₹175
36. 36.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
37. 37.🧩 Arjun bought 5 markers for ₹250 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) not enough info (c) ₹50 (d) ₹250
38. 38.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
39. 39.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
40. 40.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True

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