Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 189 · 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.🥭 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) no mango is sweet (c) yes, mangoes match (d) no, check more
2. 2.🧩 Ananya bought 5 markers and a cap for ₹215 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹215 (c) ₹43 (d) ₹210
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
4. 4.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
6. 6.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
7. 7.🧩 Aarav bought 5 notebooks for ₹225 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹45 (c) ₹225 (d) not enough info
8. 8.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Tara bought 6 pens for ₹210 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹210 (c) ₹35 (d) ₹40
11. 11.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
13. 13.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
15. 15.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Arjun is 9 years old. Kabir is older than Arjun. How old is Kabir? (a) 10 (b) 14 (c) 11 (d) not enough info
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
20. 20.🧩 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
21. 21.🧩 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
22. 22.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
23. 23.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) not enough info (d) 6 PM
25. 25.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 2 PM
26. 26.🧩 Meera bought 4 pens and a bag for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹116 (c) not enough info (d) ₹120
27. 27.🧩 A box has 4 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 11 (b) 28 (c) not enough info (d) 35
28. 28.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) 13 (b) 42 (c) not enough info (d) 48
29. 29.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 8 PM (d) 7 PM
30. 30.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
31. 31.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
32. 32.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
33. 33.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
35. 35.🧩 Tara is 6 years old. Kabir is 8 years older than Tara. How old is Kabir? (a) not enough info (b) 15 (c) 8 (d) 14
36. 36.🧩 A box has 5 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 12 (b) 42 (c) 35 (d) not enough info
37. 37.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
38. 38.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 4 PM
39. 39.🧩 Meera bought 6 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹25 (c) ₹30 (d) ₹150
40. 40.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM

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