Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 225 · 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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
4. 4.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
6. 6.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
7. 7.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Nisha bought 3 balls and a water bottle for ₹125 in all. Each ball cost the same. What did one ball cost? (a) ₹41 (b) ₹122 (c) ₹125 (d) not enough info
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Nisha bought 6 notebooks and a cap for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹204 (b) not enough info (c) ₹210 (d) ₹35
14. 14.🧩 Meera bought 4 markers for ₹160 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹160 (c) not enough info (d) ₹40
15. 15.🧩 Diya is 7 years old. Saanvi is older than Diya. How old is Saanvi? (a) 8 (b) 9 (c) 12 (d) not enough info
16. 16.🧩 A box has 4 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 11 (b) 35 (c) 28 (d) not enough info
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
18. 18.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
19. 19.🥭 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) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
20. 20.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
21. 21.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 24 (b) not enough info (c) 20 (d) 9
22. 22.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
23. 23.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
24. 24.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Saanvi bought 3 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹25 (c) ₹75 (d) not enough info
26. 26.🧩 A box has 7 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 40 (d) 35
27. 27.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Vihaan bought 4 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹80 (c) not enough info (d) ₹20
29. 29.🧩 Vihaan is 9 years old. Kabir is older than Vihaan. How old is Kabir? (a) 11 (b) not enough info (c) 14 (d) 10
30. 30.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
31. 31.🧩 Ishaan bought 3 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹35 (c) not enough info (d) ₹90
32. 32.🧩 Arjun bought 4 markers and a bag for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹150 (b) ₹146 (c) not enough info (d) ₹37
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
34. 34.🧩 Diya is 12 years old. Meera is 6 years older than Diya. How old is Meera? (a) 19 (b) 6 (c) not enough info (d) 18
35. 35.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
36. 36.🧩 Kabir bought 4 kites for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹140
37. 37.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
38. 38.🧩 Vihaan is 9 years old. Ishaan is 7 years older than Vihaan. How old is Ishaan? (a) not enough info (b) 16 (c) 7 (d) 17
39. 39.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
40. 40.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence

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