Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 331 · 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.🧩 Aarav bought 4 mangoes and a water bottle for ₹310 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹306 (c) ₹77 (d) ₹310
2. 2.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
3. 3.🧩 Ananya bought 5 balls and a cap for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹300 (c) not enough info (d) ₹295
4. 4.🧩 Ananya is 10 years old. Saanvi is 4 years older than Ananya. How old is Saanvi? (a) not enough info (b) 14 (c) 4 (d) 15
5. 5.🧩 Ishaan is 10 years old. Diya is older than Ishaan. How old is Diya? (a) not enough info (b) 15 (c) 12 (d) 11
6. 6.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Aarav is 10 years old. Tara is older than Aarav. How old is Tara? (a) 15 (b) not enough info (c) 12 (d) 11
9. 9.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
10. 10.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Arjun is 9 years old. Tara is older than Arjun. How old is Tara? (a) not enough info (b) 14 (c) 10 (d) 11
12. 12.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 56 (b) 49 (c) 14 (d) not enough info
13. 13.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
14. 14.🧩 Vihaan is 7 years old. Aarav is 4 years older than Vihaan. How old is Aarav? (a) not enough info (b) 11 (c) 12 (d) 4
15. 15.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) 3 PM (d) not enough info
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
17. 17.🧩 Aarav bought 6 notebooks and a water bottle for ₹400 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹394 (c) ₹400 (d) ₹66
18. 18.🧩 A box has 4 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 8 (c) 16 (d) 20
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Ishaan bought 6 markers and a cap for ₹170 in all. Each marker cost the same. What did one marker cost? (a) ₹170 (b) not enough info (c) ₹28 (d) ₹164
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Aarav bought 2 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹80 (b) ₹45 (c) ₹40 (d) not enough info
25. 25.🧩 Arjun bought 2 notebooks and a lunch box for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹98 (c) ₹100 (d) not enough info
26. 26.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
27. 27.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
29. 29.🧩 Ananya is 11 years old. Tara is 8 years older than Ananya. How old is Tara? (a) 19 (b) not enough info (c) 20 (d) 8
30. 30.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 36 (b) 32 (c) 12 (d) not enough info
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
32. 32.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
33. 33.🧩 Diya bought 6 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹90 (c) ₹15 (d) ₹20
34. 34.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 2 PM (c) 6 PM (d) 5 PM
35. 35.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
36. 36.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Kabir bought 2 mangoes and a cap for ₹140 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹138 (c) ₹70 (d) ₹140
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.🧩 Vihaan is 7 years old. Meera is 2 years older than Vihaan. How old is Meera? (a) not enough info (b) 2 (c) 9 (d) 10

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