Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 552 · 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.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
2. 2.🧩 Ishaan is 11 years old. Nisha is 6 years older than Ishaan. How old is Nisha? (a) 6 (b) 18 (c) not enough info (d) 17
3. 3.🧩 Meera bought 2 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹60 (d) ₹35
4. 4.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
5. 5.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
7. 7.🧩 Nisha bought 4 notebooks and a water bottle for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹76 (b) ₹20 (c) ₹80 (d) not enough info
8. 8.🧩 Arjun is 9 years old. Meera is older than Arjun. How old is Meera? (a) 11 (b) not enough info (c) 10 (d) 14
9. 9.🧩 Tara is 10 years old. Vihaan is older than Tara. How old is Vihaan? (a) 11 (b) 12 (c) not enough info (d) 15
10. 10.🧩 Kabir is 11 years old. Saanvi is 5 years older than Kabir. How old is Saanvi? (a) not enough info (b) 5 (c) 17 (d) 16
11. 11.🧩 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
12. 12.🧩 Arjun is 9 years old. Rohan is older than Arjun. How old is Rohan? (a) 14 (b) not enough info (c) 11 (d) 10
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
14. 14.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 21 (c) 10 (d) 28
15. 15.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
16. 16.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) 5 (c) not enough info (d) 50
17. 17.🧩 Ananya bought 5 balls and a cap for ₹140 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹140 (c) ₹135 (d) ₹28
18. 18.🧩 Rohan bought 4 pens for ₹140 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹140
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
20. 20.🧩 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
21. 21.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
22. 22.🧩 Tara is 12 years old. Saanvi is older than Tara. How old is Saanvi? (a) 17 (b) not enough info (c) 14 (d) 13
23. 23.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
24. 24.🧩 Nisha bought 5 kites for ₹125 in all. Each kite cost the same. What did one kite cost? (a) ₹125 (b) not enough info (c) ₹25 (d) ₹30
25. 25.🧩 Saanvi bought 6 notebooks for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) ₹360 (b) ₹65 (c) ₹60 (d) not enough info
26. 26.🧩 Ishaan bought 4 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹200 (c) ₹50 (d) ₹55
27. 27.🧩 Aarav bought 5 kites and a bag for ₹195 in all. Each kite cost the same. What did one kite cost? (a) ₹195 (b) not enough info (c) ₹39 (d) ₹190
28. 28.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
30. 30.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
31. 31.🧩 Ananya is 9 years old. Nisha is 3 years older than Ananya. How old is Nisha? (a) 12 (b) 13 (c) 3 (d) not enough info
32. 32.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
33. 33.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
34. 34.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
35. 35.🧩 Aarav bought 3 pens and a lunch box for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹147 (b) not enough info (c) ₹50 (d) ₹150
36. 36.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
37. 37.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
38. 38.🧩 Ishaan bought 5 balls and a bag for ₹165 in all. Each ball cost the same. What did one ball cost? (a) ₹165 (b) ₹160 (c) not enough info (d) ₹33
39. 39.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Saanvi bought 3 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹75 (c) ₹30 (d) ₹25

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