Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 106 · 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.🧩 Tara is 12 years old. Aarav is older than Tara. How old is Aarav? (a) 13 (b) not enough info (c) 14 (d) 17
2. 2.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
3. 3.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
4. 4.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🐕 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
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
8. 8.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) 8 (c) not enough info (d) 16
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
10. 10.🧩 A box has 7 rows of apples, with 5 in each row. How many apples are in the box? (a) 35 (b) 12 (c) not enough info (d) 40
11. 11.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
12. 12.🧩 Kabir is 6 years old. Diya is older than Kabir. How old is Diya? (a) 11 (b) 8 (c) not enough info (d) 7
13. 13.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
14. 14.🧩 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
15. 15.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
16. 16.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) not enough info (d) 6 PM
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
19. 19.🧩 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
20. 20.🧩 Vihaan bought 6 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) not enough info (c) ₹180 (d) ₹35
21. 21.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
22. 22.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 36 (b) 12 (c) 32 (d) not enough info
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Saanvi bought 2 notebooks and a cap for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹70 (b) ₹140 (c) ₹138 (d) not enough info
25. 25.🧩 Arjun is 8 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 10 (b) not enough info (c) 9 (d) 13
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
27. 27.🧩 Arjun bought 2 notebooks and a lunch box for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹138 (c) ₹70 (d) ₹140
28. 28.🧩 Aarav bought 4 markers and a lunch box for ₹170 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹166 (c) ₹42 (d) ₹170
29. 29.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
30. 30.🧩 Arjun is 9 years old. Tara is 7 years older than Arjun. How old is Tara? (a) not enough info (b) 17 (c) 16 (d) 7
31. 31.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) not enough info (b) 56 (c) 49 (d) 14
32. 32.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
33. 33.🧩 Kabir bought 5 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹150 (c) ₹30 (d) not enough info
34. 34.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
35. 35.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
36. 36.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
37. 37.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 2 PM
38. 38.🧩 Rohan bought 3 notebooks and a cap for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹207 (b) not enough info (c) ₹210 (d) ₹70
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
40. 40.🧩 Ananya is 7 years old. Rohan is older than Ananya. How old is Rohan? (a) 9 (b) 8 (c) 12 (d) not enough info

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