Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 332 · 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.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Diya bought 6 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹120 (b) ₹20 (c) ₹25 (d) not enough info
4. 4.🧩 Diya is 10 years old. Tara is older than Diya. How old is Tara? (a) not enough info (b) 11 (c) 15 (d) 12
5. 5.🧩 Nisha is 6 years old. Aarav is older than Nisha. How old is Aarav? (a) 7 (b) not enough info (c) 11 (d) 8
6. 6.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 36 (b) not enough info (c) 12 (d) 32
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
8. 8.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
9. 9.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 2 PM
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 16 (d) 8
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
13. 13.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
14. 14.🧩 Aarav is 9 years old. Kabir is 6 years older than Aarav. How old is Kabir? (a) not enough info (b) 6 (c) 16 (d) 15
15. 15.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
16. 16.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
18. 18.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
19. 19.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) 8 PM (d) not enough info
20. 20.🧩 Diya is 7 years old. Meera is 6 years older than Diya. How old is Meera? (a) 6 (b) 14 (c) not enough info (d) 13
21. 21.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 5 PM
22. 22.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
26. 26.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Tara bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹120 (c) ₹30 (d) not enough info
29. 29.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
30. 30.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
31. 31.🧩 Meera bought 3 kites and a lunch box for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹33 (b) not enough info (c) ₹97 (d) ₹100
32. 32.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
33. 33.🧩 Vihaan bought 3 balls and a lunch box for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹97 (b) not enough info (c) ₹100 (d) ₹33
34. 34.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 10 (b) 5 (c) not enough info (d) 50
35. 35.🧩 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
36. 36.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 36 (b) not enough info (c) 27 (d) 12
37. 37.🧩 A box has 3 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 20 (b) not enough info (c) 15 (d) 8
38. 38.🧩 Vihaan is 10 years old. Saanvi is 3 years older than Vihaan. How old is Saanvi? (a) not enough info (b) 14 (c) 13 (d) 3
39. 39.🧩 Meera bought 2 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹90 (c) not enough info (d) ₹45
40. 40.🧩 Arjun is 6 years old. Diya is older than Arjun. How old is Diya? (a) 7 (b) 11 (c) not enough info (d) 8

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