Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 783 · 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.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
4. 4.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) 6 PM (d) not enough info
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
6. 6.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 40 (d) 4
7. 7.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
8. 8.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
10. 10.🧩 A box has 3 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 16 (b) 7 (c) 12 (d) not enough info
11. 11.🧩 Arjun is 9 years old. Tara is 2 years older than Arjun. How old is Tara? (a) not enough info (b) 11 (c) 2 (d) 12
12. 12.🧩 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
13. 13.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) not enough info (c) 9 PM (d) 6 PM
14. 14.🧩 A box has 3 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 24 (c) 18 (d) 9
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Aarav bought 3 pens and a cap for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹90 (d) ₹87
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
18. 18.🧩 A box has 4 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 10 (b) 24 (c) not enough info (d) 30
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
21. 21.🥭 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, mangoes match (d) yes, it is certain
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
24. 24.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
25. 25.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
26. 26.🧩 Nisha is 10 years old. Meera is 6 years older than Nisha. How old is Meera? (a) 17 (b) 16 (c) 6 (d) not enough info
27. 27.🧩 Kabir is 6 years old. Nisha is 3 years older than Kabir. How old is Nisha? (a) 9 (b) 10 (c) not enough info (d) 3
28. 28.🧩 Aarav bought 2 pens and a lunch box for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹110 (b) not enough info (c) ₹108 (d) ₹55
29. 29.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
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) 7 PM (d) 9 PM
31. 31.🧩 Meera is 12 years old. Arjun is 2 years older than Meera. How old is Arjun? (a) not enough info (b) 2 (c) 15 (d) 14
32. 32.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 3 PM (c) 6 PM (d) not enough info
33. 33.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
34. 34.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) 7 PM (d) not enough info
35. 35.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
36. 36.🧩 A box has 3 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 10 (b) not enough info (c) 21 (d) 28
37. 37.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
39. 39.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 2 PM (d) 4 PM
40. 40.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence

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