Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 681 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
4. 4.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Vihaan is 6 years old. Aarav is 5 years older than Vihaan. How old is Aarav? (a) 5 (b) 12 (c) not enough info (d) 11
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
8. 8.🧩 Saanvi bought 5 markers for ₹275 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹55 (c) not enough info (d) ₹275
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
10. 10.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
11. 11.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
12. 12.🧩 Nisha bought 4 mangoes and a lunch box for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹126 (b) ₹32 (c) not enough info (d) ₹130
13. 13.🧩 Diya bought 6 kites for ₹210 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹210
14. 14.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
15. 15.🧩 Nisha bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹80
16. 16.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
17. 17.🧩 A box has 7 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 72 (b) not enough info (c) 16 (d) 63
18. 18.🧩 Nisha bought 4 pens for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹35 (c) ₹140 (d) not enough info
19. 19.🧩 Kabir bought 3 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹180 (b) not enough info (c) ₹65 (d) ₹60
20. 20.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
21. 21.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
22. 22.🥭 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) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
23. 23.🧩 Arjun bought 4 pens and a water bottle for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹156 (b) not enough info (c) ₹40 (d) ₹160
24. 24.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
25. 25.🧩 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
26. 26.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
27. 27.🧩 Tara bought 2 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹55 (c) ₹50 (d) ₹100
28. 28.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
29. 29.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
30. 30.🧩 Ishaan is 7 years old. Kabir is 7 years older than Ishaan. How old is Kabir? (a) not enough info (b) 7 (c) 15 (d) 14
31. 31.🧩 Tara is 10 years old. Kabir is 9 years older than Tara. How old is Kabir? (a) 9 (b) not enough info (c) 19 (d) 20
32. 32.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Nisha bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹240 (c) ₹60 (d) ₹65
34. 34.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
36. 36.🧩 A box has 7 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 40 (d) 35
37. 37.🧩 Diya bought 6 pens and a lunch box for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹33 (b) ₹194 (c) ₹200 (d) not enough info
38. 38.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 6 PM
39. 39.🧩 A box has 8 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 15 (c) 63 (d) 56
40. 40.🧩 Diya is 12 years old. Arjun is older than Diya. How old is Arjun? (a) 13 (b) 14 (c) 17 (d) not enough info

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