Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 978 · 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 is 9 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 14 (b) 10 (c) 11 (d) not enough info
2. 2.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
3. 3.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
5. 5.🧩 A box has 4 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 10 (b) 30 (c) not enough info (d) 24
6. 6.🧩 Meera bought 3 markers and a water bottle for ₹105 in all. Each marker cost the same. What did one marker cost? (a) ₹35 (b) ₹105 (c) not enough info (d) ₹102
7. 7.🧩 Ananya is 6 years old. Tara is older than Ananya. How old is Tara? (a) 8 (b) 11 (c) 7 (d) not enough info
8. 8.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
9. 9.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
10. 10.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
11. 11.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
12. 12.🧩 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
13. 13.🧩 Ishaan is 6 years old. Kabir is 6 years older than Ishaan. How old is Kabir? (a) 13 (b) not enough info (c) 12 (d) 6
14. 14.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
16. 16.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Aarav bought 4 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹100 (b) not enough info (c) ₹30 (d) ₹25
20. 20.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Diya is 9 years old. Nisha is older than Diya. How old is Nisha? (a) not enough info (b) 11 (c) 10 (d) 14
23. 23.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
24. 24.🧩 Kabir is 11 years old. Aarav is older than Kabir. How old is Aarav? (a) not enough info (b) 13 (c) 12 (d) 16
25. 25.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Aarav bought 4 balls for ₹220 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹220 (c) ₹55 (d) ₹60
27. 27.🥭 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
28. 28.🧩 Ishaan bought 6 markers and a water bottle for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹200 (b) ₹194 (c) ₹33 (d) not enough info
29. 29.🧩 Aarav is 8 years old. Arjun is 8 years older than Aarav. How old is Arjun? (a) 8 (b) not enough info (c) 16 (d) 17
30. 30.🧩 Kabir bought 2 markers and a water bottle for ₹110 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹110 (c) ₹108 (d) ₹55
31. 31.🧩 Rohan is 7 years old. Meera is 6 years older than Rohan. How old is Meera? (a) 6 (b) not enough info (c) 14 (d) 13
32. 32.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 28 (b) 24 (c) not enough info (d) 10
33. 33.🧩 Ishaan bought 3 kites and a bag for ₹205 in all. Each kite cost the same. What did one kite cost? (a) ₹202 (b) ₹205 (c) ₹68 (d) not enough info
34. 34.📊 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
35. 35.🧩 Aarav bought 2 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹45 (c) not enough info (d) ₹90
36. 36.🧩 Vihaan bought 6 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹90
37. 37.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
38. 38.🧩 Vihaan bought 2 balls for ₹70 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹70
39. 39.🧩 Diya bought 2 pens for ₹20 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹10
40. 40.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True

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