Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 594 · 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 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 13 (b) 40 (c) 48 (d) not enough info
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
3. 3.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
4. 4.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 5 PM (c) 8 PM (d) not enough info
5. 5.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 8 PM
6. 6.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
7. 7.🧩 Diya is 7 years old. Arjun is 7 years older than Diya. How old is Arjun? (a) not enough info (b) 14 (c) 15 (d) 7
8. 8.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
10. 10.🧩 A box has 4 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 30 (b) 24 (c) not enough info (d) 10
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
13. 13.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 42 (b) 48 (c) 13 (d) not enough info
14. 14.🧩 Meera bought 2 pens and a lunch box for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹138 (b) ₹140 (c) not enough info (d) ₹70
15. 15.🧩 Rohan bought 4 balls for ₹80 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹80 (c) ₹25 (d) ₹20
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
17. 17.🧩 A box has 5 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 54 (b) 45 (c) 14 (d) not enough info
18. 18.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
20. 20.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
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Nisha bought 2 notebooks and a water bottle for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹68 (b) ₹70 (c) ₹35 (d) not enough info
23. 23.🧩 Diya is 9 years old. Kabir is 8 years older than Diya. How old is Kabir? (a) 8 (b) not enough info (c) 17 (d) 18
24. 24.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
25. 25.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
27. 27.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
28. 28.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 32 (d) 36
29. 29.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
32. 32.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) not enough info (d) 4 PM
33. 33.🧩 Tara is 8 years old. Diya is 4 years older than Tara. How old is Diya? (a) 4 (b) 13 (c) 12 (d) not enough info
34. 34.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info
35. 35.🧩 Ananya is 12 years old. Tara is 7 years older than Ananya. How old is Tara? (a) 20 (b) 7 (c) not enough info (d) 19
36. 36.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
37. 37.🧩 Arjun bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹25 (c) not enough info (d) ₹20
38. 38.🧩 Aarav bought 4 mangoes for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹140 (b) ₹40 (c) not enough info (d) ₹35
39. 39.🧩 Ishaan is 6 years old. Aarav is 4 years older than Ishaan. How old is Aarav? (a) 4 (b) not enough info (c) 10 (d) 11
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM

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