Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 390 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
3. 3.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 48 (c) 56 (d) 14
4. 4.🧩 Arjun bought 5 notebooks and a bag for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) not enough info (c) ₹24 (d) ₹115
5. 5.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 18 (b) 9 (c) 90 (d) not enough info
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
7. 7.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, mangoes match (d) yes, it is certain
8. 8.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
9. 9.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
10. 10.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
11. 11.🐕 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
12. 12.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) 6 PM (d) not enough info
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
14. 14.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 13 (b) not enough info (c) 42 (d) 49
15. 15.🧩 Rohan bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹50 (c) not enough info (d) ₹25
16. 16.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Kabir bought 3 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹35 (c) ₹90 (d) ₹30
18. 18.🧩 Diya is 7 years old. Rohan is older than Diya. How old is Rohan? (a) 9 (b) 12 (c) 8 (d) not enough info
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
20. 20.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
21. 21.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
22. 22.🧩 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
23. 23.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
24. 24.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
25. 25.🧩 Nisha is 8 years old. Diya is 3 years older than Nisha. How old is Diya? (a) 12 (b) 11 (c) 3 (d) not enough info
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
27. 27.🧩 A box has 3 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 11 (b) 32 (c) not enough info (d) 24
28. 28.🧩 Kabir bought 3 kites and a cap for ₹210 in all. Each kite cost the same. What did one kite cost? (a) ₹210 (b) ₹70 (c) ₹207 (d) not enough info
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
30. 30.🧩 A box has 7 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 72 (b) not enough info (c) 16 (d) 63
31. 31.🧩 Saanvi bought 2 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹80 (b) ₹45 (c) ₹40 (d) not enough info
32. 32.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 24 (b) not enough info (c) 9 (d) 18
33. 33.🧩 Rohan is 6 years old. Arjun is 2 years older than Rohan. How old is Arjun? (a) 2 (b) 9 (c) not enough info (d) 8
34. 34.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 7 PM (d) 8 PM
35. 35.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
37. 37.🧩 Nisha is 9 years old. Arjun is 9 years older than Nisha. How old is Arjun? (a) 19 (b) not enough info (c) 9 (d) 18
38. 38.🧩 Meera bought 2 kites and a lunch box for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹80 (b) not enough info (c) ₹160 (d) ₹158
39. 39.🧩 Kabir is 7 years old. Diya is 2 years older than Kabir. How old is Diya? (a) not enough info (b) 2 (c) 9 (d) 10
40. 40.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence

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