Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 895 · 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.🧩 Kabir bought 4 balls and a bag for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) not enough info (c) ₹156 (d) ₹160
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Meera bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) not enough info (c) ₹35 (d) ₹30
4. 4.🧩 Rohan bought 2 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹25 (c) ₹30 (d) not enough info
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Vihaan is 12 years old. Aarav is older than Vihaan. How old is Aarav? (a) 14 (b) 13 (c) not enough info (d) 17
7. 7.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
8. 8.🧩 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
9. 9.🧩 Vihaan bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹60
10. 10.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
11. 11.🧩 Meera is 9 years old. Ananya is older than Meera. How old is Ananya? (a) not enough info (b) 14 (c) 11 (d) 10
12. 12.🧩 Ishaan is 9 years old. Arjun is older than Ishaan. How old is Arjun? (a) 14 (b) 11 (c) not enough info (d) 10
13. 13.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
14. 14.🧩 Meera bought 2 kites and a bag for ₹130 in all. Each kite cost the same. What did one kite cost? (a) ₹128 (b) ₹130 (c) not enough info (d) ₹65
15. 15.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
18. 18.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) 8 PM (d) not enough info
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
20. 20.🥭 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) no mango is sweet (c) no, check more (d) yes, mangoes match
21. 21.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
23. 23.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) not enough info (b) 90 (c) 9 (d) 18
24. 24.🧩 Diya is 10 years old. Saanvi is 2 years older than Diya. How old is Saanvi? (a) 13 (b) 2 (c) 12 (d) not enough info
25. 25.🧩 A box has 3 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 21 (b) not enough info (c) 10 (d) 28
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
27. 27.🧩 Kabir bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹120 (c) ₹30 (d) ₹35
28. 28.🧩 Arjun is 6 years old. Diya is 6 years older than Arjun. How old is Diya? (a) 13 (b) not enough info (c) 6 (d) 12
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
30. 30.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 5 PM
31. 31.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
32. 32.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
33. 33.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
34. 34.🧩 Vihaan bought 3 markers for ₹165 in all. Each marker cost the same. What did one marker cost? (a) ₹165 (b) ₹60 (c) not enough info (d) ₹55
35. 35.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
36. 36.🐕 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
37. 37.🧩 Rohan is 7 years old. Saanvi is 7 years older than Rohan. How old is Saanvi? (a) not enough info (b) 14 (c) 15 (d) 7
38. 38.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
39. 39.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Diya is 10 years old. Nisha is older than Diya. How old is Nisha? (a) not enough info (b) 12 (c) 11 (d) 15

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