Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 755 · 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 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) 2 PM (d) not enough info
2. 2.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) not enough info (c) 70 (d) 7
3. 3.🧩 Saanvi bought 3 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹90 (b) not enough info (c) ₹30 (d) ₹35
4. 4.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Nisha bought 4 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹35 (d) ₹120
7. 7.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) the colour of ink (d) your handwriting
8. 8.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) not enough info (b) 27 (c) 12 (d) 36
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
10. 10.🧩 Meera is 8 years old. Aarav is older than Meera. How old is Aarav? (a) not enough info (b) 10 (c) 9 (d) 13
11. 11.🧩 Ishaan bought 5 notebooks and a water bottle for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) ₹60 (c) ₹295 (d) not enough info
12. 12.🧩 Kabir is 7 years old. Arjun is older than Kabir. How old is Arjun? (a) 8 (b) 9 (c) 12 (d) not enough info
13. 13.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 6 PM (c) 3 PM (d) not enough info
14. 14.🧩 Kabir bought 6 balls for ₹360 in all. Each ball cost the same. What did one ball cost? (a) ₹65 (b) not enough info (c) ₹360 (d) ₹60
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
16. 16.🧩 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
17. 17.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
19. 19.🧩 Tara is 12 years old. Meera is older than Tara. How old is Meera? (a) 13 (b) 17 (c) 14 (d) not enough info
20. 20.🧩 Arjun bought 4 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹100 (c) ₹25 (d) ₹30
21. 21.🧩 Ishaan bought 4 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹200 (b) ₹55 (c) ₹50 (d) not enough info
22. 22.🧩 Arjun bought 5 mangoes and a lunch box for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹120 (b) not enough info (c) ₹115 (d) ₹24
23. 23.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
25. 25.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 40 (c) not enough info (d) 8
26. 26.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
27. 27.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
28. 28.🧩 Kabir bought 2 balls for ₹30 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹30 (c) ₹15 (d) ₹20
29. 29.🧩 Ishaan bought 6 balls and a lunch box for ₹450 in all. Each ball cost the same. What did one ball cost? (a) ₹444 (b) not enough info (c) ₹75 (d) ₹450
30. 30.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
31. 31.🥭 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, check more (c) no mango is sweet (d) yes, mangoes match
32. 32.🧩 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
33. 33.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
34. 34.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 5 (d) 50
35. 35.🧩 Aarav bought 3 pens and a cap for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹237 (b) ₹80 (c) ₹240 (d) not enough info
36. 36.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
38. 38.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) 25 (b) 20 (c) 9 (d) not enough info
39. 39.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 6 (c) not enough info (d) 60
40. 40.🧩 Arjun is 8 years old. Tara is 4 years older than Arjun. How old is Tara? (a) 13 (b) not enough info (c) 4 (d) 12

Free critical thinking lessons, practice and worksheets at talentjr.in/critical-thinking-for-kids