Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 514 · 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.🧩 A box has 3 rows of apples, with 6 in each row. How many apples are in the box? (a) 24 (b) not enough info (c) 9 (d) 18
2. 2.🧩 Ishaan is 7 years old. Vihaan is 7 years older than Ishaan. How old is Vihaan? (a) not enough info (b) 7 (c) 14 (d) 15
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Arjun bought 3 markers and a water bottle for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹130 (b) ₹127 (c) not enough info (d) ₹43
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
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: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
9. 9.🧩 Rohan bought 3 balls and a bag for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹57 (b) not enough info (c) ₹60 (d) ₹20
10. 10.🧩 Arjun bought 6 markers for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹270 (c) ₹45 (d) not enough info
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
12. 12.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 25 (d) 9
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Kabir bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹120
15. 15.🧩 Nisha bought 5 pens and a bag for ₹245 in all. Each pen cost the same. What did one pen cost? (a) ₹49 (b) ₹245 (c) not enough info (d) ₹240
16. 16.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
17. 17.🧩 Saanvi bought 3 notebooks and a water bottle for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹33 (b) ₹100 (c) ₹97 (d) not enough info
18. 18.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
20. 20.🧩 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
21. 21.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
22. 22.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
23. 23.🥭 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
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
27. 27.🧩 Tara is 8 years old. Meera is older than Tara. How old is Meera? (a) 9 (b) 10 (c) 13 (d) not enough info
28. 28.🧩 Nisha bought 5 kites and a cap for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹33 (b) ₹165 (c) ₹160 (d) not enough info
29. 29.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
30. 30.🧩 Arjun bought 5 balls for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹100
31. 31.🧩 A box has 4 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 24 (b) 30 (c) 10 (d) not enough info
32. 32.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 6 PM (d) 5 PM
33. 33.🧩 Meera bought 5 pens and a cap for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹195 (b) ₹200 (c) not enough info (d) ₹40
34. 34.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
35. 35.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) 3 PM (d) not enough info
36. 36.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
37. 37.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 5 PM
38. 38.🧩 Meera is 8 years old. Kabir is 4 years older than Meera. How old is Kabir? (a) not enough info (b) 12 (c) 13 (d) 4
39. 39.🧩 Tara is 7 years old. Rohan is older than Tara. How old is Rohan? (a) 8 (b) 9 (c) 12 (d) not enough info
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False

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