Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 967 · 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.🧩 Meera bought 4 pens and a cap for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) ₹96 (c) not enough info (d) ₹25
2. 2.🧩 Vihaan is 11 years old. Meera is older than Vihaan. How old is Meera? (a) 13 (b) not enough info (c) 12 (d) 16
3. 3.🧩 Diya bought 5 pens for ₹175 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹175 (c) ₹35 (d) ₹40
4. 4.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Ishaan is 6 years old. Kabir is older than Ishaan. How old is Kabir? (a) not enough info (b) 7 (c) 8 (d) 11
6. 6.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 16 (c) 8 (d) 80
7. 7.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
8. 8.📊 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
9. 9.🧩 Meera bought 6 kites for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹270
10. 10.🧩 Nisha bought 5 mangoes and a cap for ₹320 in all. Each mango cost the same. What did one mango cost? (a) ₹315 (b) ₹64 (c) not enough info (d) ₹320
11. 11.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
12. 12.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 20 (b) 24 (c) not enough info (d) 9
13. 13.🧩 Kabir bought 3 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹60 (c) ₹65 (d) ₹180
14. 14.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
15. 15.🧩 Aarav bought 4 notebooks for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹140
16. 16.🧩 Saanvi is 10 years old. Rohan is older than Saanvi. How old is Rohan? (a) not enough info (b) 12 (c) 11 (d) 15
17. 17.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
18. 18.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
19. 19.🧩 Meera bought 6 notebooks and a water bottle for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹174 (b) ₹30 (c) ₹180 (d) not enough info
20. 20.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
21. 21.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
22. 22.🧩 Aarav bought 2 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹35 (c) ₹30 (d) not enough info
23. 23.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 2 PM
24. 24.🧩 Kabir is 8 years old. Aarav is 9 years older than Kabir. How old is Aarav? (a) 9 (b) not enough info (c) 17 (d) 18
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
26. 26.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 8 PM
28. 28.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
29. 29.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
30. 30.🧩 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
31. 31.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
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
33. 33.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
34. 34.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
35. 35.🧩 Kabir is 9 years old. Ananya is 8 years older than Kabir. How old is Ananya? (a) not enough info (b) 18 (c) 8 (d) 17
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
37. 37.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
38. 38.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence

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