Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 764 · 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 tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
2. 2.🧩 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
3. 3.🧩 Diya is 6 years old. Meera is older than Diya. How old is Meera? (a) not enough info (b) 7 (c) 8 (d) 11
4. 4.🧩 Saanvi bought 3 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹60 (c) ₹20 (d) not enough info
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Ananya bought 6 pens and a cap for ₹230 in all. Each pen cost the same. What did one pen cost? (a) ₹230 (b) ₹224 (c) not enough info (d) ₹38
9. 9.🧩 Aarav bought 3 pens and a water bottle for ₹260 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹260 (c) ₹257 (d) ₹86
10. 10.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
11. 11.🧩 Aarav bought 2 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹40 (c) ₹80 (d) ₹45
12. 12.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 8 PM
13. 13.🧩 Saanvi is 9 years old. Rohan is older than Saanvi. How old is Rohan? (a) not enough info (b) 14 (c) 10 (d) 11
14. 14.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
15. 15.🧩 A box has 5 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 35 (b) 12 (c) not enough info (d) 42
16. 16.🧩 A box has 4 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 28 (b) not enough info (c) 11 (d) 35
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.🧩 Vihaan bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹105 (c) not enough info (d) ₹40
19. 19.🧩 A box has 7 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 11 (b) not enough info (c) 32 (d) 28
20. 20.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 5 (c) 10 (d) 50
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
22. 22.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
23. 23.🧩 Tara is 11 years old. Aarav is older than Tara. How old is Aarav? (a) not enough info (b) 13 (c) 16 (d) 12
24. 24.🧩 Arjun bought 4 markers for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹140 (b) not enough info (c) ₹35 (d) ₹40
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
28. 28.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) 11 (b) not enough info (c) 32 (d) 28
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
30. 30.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) not enough info (b) 60 (c) 6 (d) 12
31. 31.🧩 Ananya bought 5 kites and a lunch box for ₹350 in all. Each kite cost the same. What did one kite cost? (a) ₹345 (b) not enough info (c) ₹350 (d) ₹70
32. 32.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 8 PM (c) 5 PM (d) not enough info
33. 33.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
34. 34.🧩 Saanvi is 8 years old. Meera is 5 years older than Saanvi. How old is Meera? (a) not enough info (b) 5 (c) 13 (d) 14
35. 35.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
36. 36.🧩 Kabir bought 4 notebooks and a water bottle for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹100 (c) ₹96 (d) not enough info
37. 37.🧩 Ishaan bought 6 notebooks and a bag for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) ₹294 (c) not enough info (d) ₹50
38. 38.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
40. 40.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 10 (c) not enough info (d) 50

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