Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 801 · 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.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
2. 2.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
3. 3.🧩 Arjun bought 2 balls and a water bottle for ₹130 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹130 (c) ₹128 (d) ₹65
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
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, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Aarav is 7 years old. Vihaan is 2 years older than Aarav. How old is Vihaan? (a) 2 (b) 9 (c) not enough info (d) 10
8. 8.🧩 Nisha is 11 years old. Kabir is 3 years older than Nisha. How old is Kabir? (a) 3 (b) not enough info (c) 14 (d) 15
9. 9.🧩 Diya is 6 years old. Aarav is 9 years older than Diya. How old is Aarav? (a) 15 (b) not enough info (c) 16 (d) 9
10. 10.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
11. 11.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
12. 12.🧩 A box has 8 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 15 (b) 56 (c) not enough info (d) 63
13. 13.🧩 A box has 4 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 32 (d) 40
14. 14.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Vihaan bought 5 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹75
17. 17.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
18. 18.🧩 Kabir bought 3 notebooks and a lunch box for ₹95 in all. Each notebook cost the same. What did one notebook cost? (a) ₹31 (b) ₹92 (c) ₹95 (d) not enough info
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
20. 20.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 45 (b) 13 (c) 36 (d) not enough info
21. 21.🧩 Meera bought 2 markers for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) not enough info (c) ₹110 (d) ₹55
22. 22.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
23. 23.🧩 Meera bought 6 mangoes for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹150 (c) ₹25 (d) not enough info
24. 24.🧩 A box has 5 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 45 (b) not enough info (c) 14 (d) 54
25. 25.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 2 PM
26. 26.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
27. 27.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
28. 28.🧩 Diya bought 4 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) not enough info (c) ₹45 (d) ₹50
29. 29.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
30. 30.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
31. 31.🧩 Tara bought 5 balls and a water bottle for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹26 (b) not enough info (c) ₹130 (d) ₹125
32. 32.🧩 A box has 5 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 36 (b) 30 (c) 11 (d) not enough info
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
36. 36.🧩 Tara bought 5 mangoes and a cap for ₹210 in all. Each mango cost the same. What did one mango cost? (a) ₹205 (b) ₹210 (c) not enough info (d) ₹42
37. 37.🧩 Tara is 7 years old. Arjun is 5 years older than Tara. How old is Arjun? (a) not enough info (b) 5 (c) 12 (d) 13
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
39. 39.🧩 A box has 7 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 63 (b) not enough info (c) 16 (d) 72
40. 40.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 18 (c) not enough info (d) 90

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