Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 386 · 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.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
2. 2.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
4. 4.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
7. 7.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 11 (b) not enough info (c) 30 (d) 36
8. 8.🧩 Meera bought 4 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹200
9. 9.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
10. 10.🧩 Vihaan is 9 years old. Nisha is 9 years older than Vihaan. How old is Nisha? (a) not enough info (b) 18 (c) 19 (d) 9
11. 11.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
12. 12.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
13. 13.🧩 A box has 5 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 25 (b) 30 (c) 10 (d) not enough info
14. 14.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
15. 15.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
16. 16.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) 7 PM (d) not enough info
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
18. 18.🧩 Ishaan is 6 years old. Aarav is older than Ishaan. How old is Aarav? (a) 7 (b) 8 (c) not enough info (d) 11
19. 19.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 7 (d) 16
20. 20.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 10 PM (c) 9 PM (d) not enough info
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
22. 22.🧩 A box has 6 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 56 (b) not enough info (c) 14 (d) 48
23. 23.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
24. 24.🧩 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
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
27. 27.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 7 (b) 16 (c) not enough info (d) 12
28. 28.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 3 PM
29. 29.🧩 Kabir is 10 years old. Arjun is older than Kabir. How old is Arjun? (a) 11 (b) 12 (c) 15 (d) not enough info
30. 30.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
31. 31.🧩 A box has 7 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 12 (b) 40 (c) 35 (d) not enough info
32. 32.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
33. 33.🧩 Meera bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹40
34. 34.🧩 Tara is 11 years old. Ananya is 9 years older than Tara. How old is Ananya? (a) 21 (b) not enough info (c) 9 (d) 20
35. 35.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) 40 (b) 45 (c) 13 (d) not enough info
36. 36.🧩 Aarav bought 3 mangoes and a cap for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹117 (b) not enough info (c) ₹40 (d) ₹120
37. 37.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
38. 38.🧩 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
39. 39.🧩 Meera is 11 years old. Diya is older than Meera. How old is Diya? (a) not enough info (b) 16 (c) 13 (d) 12
40. 40.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 9 PM

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