Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 493 · 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.🧩 Kabir bought 2 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) ₹60 (c) not enough info (d) ₹65
2. 2.🧩 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
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
4. 4.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
5. 5.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
6. 6.🧩 Ananya is 10 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 12 (b) 11 (c) 15 (d) not enough info
7. 7.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
8. 8.🧩 A box has 8 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 45 (b) 13 (c) 40 (d) not enough info
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
12. 12.🧩 Arjun is 8 years old. Meera is 4 years older than Arjun. How old is Meera? (a) 12 (b) not enough info (c) 13 (d) 4
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
14. 14.🧩 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
15. 15.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
16. 16.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
17. 17.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
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.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Meera bought 6 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹60 (c) ₹15 (d) ₹10
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
23. 23.🧩 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
24. 24.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
27. 27.🧩 A box has 3 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 11 (b) not enough info (c) 24 (d) 32
28. 28.🧩 Rohan is 11 years old. Ananya is 7 years older than Rohan. How old is Ananya? (a) 18 (b) not enough info (c) 7 (d) 19
29. 29.🧩 Ananya bought 4 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) not enough info (c) ₹20 (d) ₹25
30. 30.🧩 Kabir is 10 years old. Aarav is 7 years older than Kabir. How old is Aarav? (a) 18 (b) 17 (c) not enough info (d) 7
31. 31.🧩 Diya bought 5 mangoes and a cap for ₹320 in all. Each mango cost the same. What did one mango cost? (a) ₹64 (b) ₹315 (c) not enough info (d) ₹320
32. 32.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Rohan bought 6 mangoes and a lunch box for ₹290 in all. Each mango cost the same. What did one mango cost? (a) ₹284 (b) not enough info (c) ₹48 (d) ₹290
34. 34.🧩 Rohan bought 3 mangoes for ₹135 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹50 (c) ₹135 (d) ₹45
35. 35.🧩 Tara bought 4 mangoes and a bag for ₹230 in all. Each mango cost the same. What did one mango cost? (a) ₹230 (b) ₹57 (c) ₹226 (d) not enough info
36. 36.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
37. 37.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
38. 38.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Kabir bought 4 balls and a cap for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹240 (c) not enough info (d) ₹236
40. 40.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

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