Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 715 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
2. 2.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 6 PM (c) not enough info (d) 8 PM
3. 3.🧩 Rohan is 10 years old. Diya is older than Rohan. How old is Diya? (a) 15 (b) 11 (c) not enough info (d) 12
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Meera is 6 years old. Saanvi is older than Meera. How old is Saanvi? (a) not enough info (b) 7 (c) 8 (d) 11
6. 6.🧩 A box has 5 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 35 (b) 12 (c) 42 (d) not enough info
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
9. 9.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
10. 10.🧩 Tara bought 3 balls and a bag for ₹190 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹190 (c) ₹63 (d) ₹187
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.🧩 A box has 6 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) not enough info (b) 54 (c) 15 (d) 63
13. 13.🧩 Saanvi is 7 years old. Aarav is 8 years older than Saanvi. How old is Aarav? (a) 16 (b) 15 (c) not enough info (d) 8
14. 14.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
15. 15.🧩 A box has 3 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 10 (b) 21 (c) not enough info (d) 28
16. 16.🧩 Nisha bought 4 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) not enough info (c) ₹60 (d) ₹240
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
18. 18.🧩 Ishaan bought 4 pens and a lunch box for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹136 (b) ₹140 (c) not enough info (d) ₹35
19. 19.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
20. 20.🧩 Vihaan is 9 years old. Meera is 6 years older than Vihaan. How old is Meera? (a) 16 (b) 15 (c) 6 (d) not enough info
21. 21.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
22. 22.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Arjun is 6 years old. Kabir is 6 years older than Arjun. How old is Kabir? (a) 13 (b) 6 (c) not enough info (d) 12
25. 25.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
26. 26.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
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: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
30. 30.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Kabir is 6 years old. Diya is 9 years older than Kabir. How old is Diya? (a) 15 (b) 16 (c) 9 (d) not enough info
32. 32.🧩 Ananya bought 5 markers and a lunch box for ₹205 in all. Each marker cost the same. What did one marker cost? (a) ₹200 (b) ₹205 (c) not enough info (d) ₹41
33. 33.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
34. 34.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 14 (b) not enough info (c) 54 (d) 48
35. 35.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
36. 36.🧩 Aarav is 7 years old. Kabir is 7 years older than Aarav. How old is Kabir? (a) 7 (b) 15 (c) not enough info (d) 14
37. 37.🧩 Tara is 6 years old. Rohan is 9 years older than Tara. How old is Rohan? (a) 9 (b) 15 (c) 16 (d) not enough info
38. 38.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
39. 39.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
40. 40.🧩 Aarav bought 2 balls for ₹30 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹30 (c) ₹15 (d) not enough info

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