Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 956 · 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 of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Arjun is 7 years old. Rohan is 8 years older than Arjun. How old is Rohan? (a) 16 (b) 8 (c) 15 (d) not enough info
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
6. 6.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 8 (b) 80 (c) 16 (d) not enough info
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Nisha bought 2 kites for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹110 (c) ₹55 (d) not enough info
10. 10.🧩 A box has 4 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 40 (b) 12 (c) 32 (d) not enough info
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
13. 13.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Kabir bought 5 pens and a bag for ₹210 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹210 (c) ₹42 (d) ₹205
16. 16.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 5 PM
17. 17.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
20. 20.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Kabir is 10 years old. Aarav is older than Kabir. How old is Aarav? (a) 11 (b) not enough info (c) 15 (d) 12
22. 22.🥭 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, check more (d) no mango is sweet
23. 23.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
24. 24.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
25. 25.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
26. 26.🧩 Aarav is 7 years old. Meera is older than Aarav. How old is Meera? (a) 9 (b) not enough info (c) 12 (d) 8
27. 27.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
28. 28.🧩 A box has 8 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 45 (b) 13 (c) not enough info (d) 40
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
30. 30.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
31. 31.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 80 (d) 16
32. 32.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
33. 33.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
34. 34.🧩 Ishaan is 8 years old. Rohan is 3 years older than Ishaan. How old is Rohan? (a) 11 (b) 3 (c) 12 (d) not enough info
35. 35.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 32 (b) not enough info (c) 24 (d) 11
36. 36.🧩 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
37. 37.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) 7 PM (d) not enough info
38. 38.🧩 Diya is 10 years old. Meera is 2 years older than Diya. How old is Meera? (a) 12 (b) 2 (c) 13 (d) not enough info
39. 39.🧩 Diya is 7 years old. Nisha is 6 years older than Diya. How old is Nisha? (a) 13 (b) 14 (c) 6 (d) not enough info
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend

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