Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 865 · 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.🧩 Saanvi bought 5 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) ₹150 (c) not enough info (d) ₹30
2. 2.🧩 Vihaan bought 2 notebooks and a cap for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹55 (c) ₹108 (d) ₹110
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
4. 4.🧩 A box has 4 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 9 (b) 20 (c) 25 (d) not enough info
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Meera bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) not enough info (c) ₹50 (d) ₹55
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Tara is 9 years old. Kabir is older than Tara. How old is Kabir? (a) 10 (b) 14 (c) not enough info (d) 11
9. 9.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
10. 10.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
11. 11.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
14. 14.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
16. 16.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
17. 17.🧩 Ishaan is 6 years old. Nisha is older than Ishaan. How old is Nisha? (a) 7 (b) not enough info (c) 11 (d) 8
18. 18.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) not enough info (c) 14 (d) 7
19. 19.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
20. 20.🧩 Kabir is 6 years old. Ishaan is 9 years older than Kabir. How old is Ishaan? (a) 15 (b) not enough info (c) 9 (d) 16
21. 21.📊 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
22. 22.🧩 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
23. 23.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 4 PM
24. 24.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
25. 25.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
27. 27.🧩 A box has 5 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 42 (c) 35 (d) 12
28. 28.🧩 Ishaan bought 3 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹150 (c) not enough info (d) ₹55
29. 29.🧩 A box has 6 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 49 (b) 13 (c) not enough info (d) 42
30. 30.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 7 PM
31. 31.🧩 Ishaan bought 3 markers and a water bottle for ₹185 in all. Each marker cost the same. What did one marker cost? (a) ₹61 (b) ₹185 (c) not enough info (d) ₹182
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Arjun bought 4 pens for ₹220 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹220 (c) ₹60 (d) not enough info
34. 34.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) 5 PM (d) not enough info
35. 35.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
36. 36.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) 4 PM (d) not enough info
37. 37.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 4 PM (c) 8 PM (d) 7 PM
38. 38.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 9 PM
39. 39.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) 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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