Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 132 · 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 tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
2. 2.🧩 Arjun bought 4 notebooks and a lunch box for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) ₹116 (c) ₹30 (d) not enough info
3. 3.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
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
5. 5.🧩 Nisha is 6 years old. Arjun is older than Nisha. How old is Arjun? (a) 7 (b) not enough info (c) 8 (d) 11
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
7. 7.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 24 (b) 9 (c) not enough info (d) 20
8. 8.🥭 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, it is certain (c) no mango is sweet (d) yes, mangoes match
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
10. 10.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
12. 12.🧩 Saanvi is 10 years old. Ananya is 3 years older than Saanvi. How old is Ananya? (a) 13 (b) 3 (c) 14 (d) not enough info
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
15. 15.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 8 (d) 80
16. 16.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
20. 20.🧩 Tara bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹120
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
22. 22.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
23. 23.🧩 Tara is 12 years old. Kabir is 7 years older than Tara. How old is Kabir? (a) 7 (b) 20 (c) not enough info (d) 19
24. 24.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
25. 25.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 8 PM (d) 5 PM
26. 26.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Arjun bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) ₹25 (c) not enough info (d) ₹20
30. 30.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 7 PM (c) 3 PM (d) not enough info
31. 31.🧩 Tara bought 3 balls for ₹105 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹40 (d) ₹105
32. 32.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 50 (c) not enough info (d) 5
33. 33.🧩 Diya is 10 years old. Rohan is 5 years older than Diya. How old is Rohan? (a) 15 (b) 5 (c) not enough info (d) 16
34. 34.🧩 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
35. 35.🧩 Saanvi bought 6 kites and a water bottle for ₹380 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹380 (c) ₹63 (d) ₹374
36. 36.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Nisha bought 5 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) ₹30 (c) not enough info (d) ₹150
39. 39.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
40. 40.🧩 Tara bought 6 mangoes for ₹150 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹150 (c) ₹30 (d) ₹25

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