Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 53 · 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.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
4. 4.🧩 Arjun is 7 years old. Aarav is older than Arjun. How old is Aarav? (a) 8 (b) not enough info (c) 9 (d) 12
5. 5.🧩 A box has 4 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 32 (b) 12 (c) not enough info (d) 40
6. 6.🧩 Rohan bought 6 balls and a water bottle for ₹250 in all. Each ball cost the same. What did one ball cost? (a) ₹250 (b) ₹41 (c) not enough info (d) ₹244
7. 7.🧩 Diya is 6 years old. Nisha is 7 years older than Diya. How old is Nisha? (a) 7 (b) not enough info (c) 13 (d) 14
8. 8.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) 9 (c) not enough info (d) 18
9. 9.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
10. 10.🧩 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
11. 11.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
12. 12.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
14. 14.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
15. 15.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 2 PM (d) not enough info
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
18. 18.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
19. 19.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
20. 20.🧩 Meera bought 6 markers for ₹210 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹35 (c) ₹210 (d) ₹40
21. 21.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
23. 23.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 5 PM
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
25. 25.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 11 (b) not enough info (c) 36 (d) 30
26. 26.🧩 Saanvi bought 2 kites and a bag for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) ₹70 (c) not enough info (d) ₹138
27. 27.🧩 A box has 5 rows of apples, with 9 in each row. How many apples are in the box? (a) not enough info (b) 54 (c) 45 (d) 14
28. 28.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
29. 29.🧩 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
30. 30.🧩 Rohan bought 2 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹80 (c) not enough info (d) ₹40
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
32. 32.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
33. 33.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
34. 34.🧩 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
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
36. 36.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
37. 37.🧩 Ishaan bought 5 mangoes and a cap for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹235 (b) ₹240 (c) ₹48 (d) not enough info
38. 38.🧩 A box has 7 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 16 (b) not enough info (c) 63 (d) 72
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
40. 40.🧩 A box has 7 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 56 (b) not enough info (c) 14 (d) 49

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