Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 279 · 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.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
2. 2.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 2 PM
3. 3.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
4. 4.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
5. 5.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
6. 6.🧩 Tara bought 5 kites and a bag for ₹260 in all. Each kite cost the same. What did one kite cost? (a) ₹255 (b) ₹52 (c) not enough info (d) ₹260
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
8. 8.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
10. 10.🧩 A box has 5 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 35 (c) 12 (d) 42
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
12. 12.🧩 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
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
14. 14.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
15. 15.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Diya is 6 years old. Aarav is older than Diya. How old is Aarav? (a) 7 (b) 8 (c) not enough info (d) 11
18. 18.🐕 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
19. 19.🧩 Nisha is 10 years old. Tara is older than Nisha. How old is Tara? (a) 11 (b) 15 (c) 12 (d) not enough info
20. 20.🧩 Meera bought 3 notebooks and a bag for ₹125 in all. Each notebook cost the same. What did one notebook cost? (a) ₹122 (b) not enough info (c) ₹125 (d) ₹41
21. 21.🧩 Arjun bought 4 balls and a water bottle for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹140 (d) ₹136
22. 22.🧩 Meera is 10 years old. Kabir is older than Meera. How old is Kabir? (a) not enough info (b) 11 (c) 12 (d) 15
23. 23.🧩 Saanvi is 11 years old. Aarav is 3 years older than Saanvi. How old is Aarav? (a) 3 (b) 14 (c) 15 (d) not enough info
24. 24.🧩 Kabir is 6 years old. Vihaan is older than Kabir. How old is Vihaan? (a) not enough info (b) 7 (c) 11 (d) 8
25. 25.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
26. 26.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box has 6 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 35 (c) 30 (d) 11
28. 28.🧩 Rohan bought 5 markers and a bag for ₹270 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹54 (c) ₹270 (d) ₹265
29. 29.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
30. 30.🧩 Kabir is 8 years old. Meera is 6 years older than Kabir. How old is Meera? (a) 15 (b) 6 (c) not enough info (d) 14
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Diya bought 5 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹75
33. 33.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
34. 34.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 5 PM
35. 35.🧩 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
36. 36.🧩 A box has 3 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 12 (b) 27 (c) not enough info (d) 36
37. 37.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
38. 38.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
39. 39.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 80 (b) not enough info (c) 8 (d) 16
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence

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