Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 937 · 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.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 10 PM (d) 9 PM
3. 3.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
4. 4.🥭 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, it is certain (d) yes, mangoes match
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.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
7. 7.🧩 Meera bought 4 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹60 (c) ₹20 (d) ₹15
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
9. 9.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
10. 10.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
11. 11.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
13. 13.🧩 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
14. 14.🧩 Vihaan bought 3 markers for ₹135 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹135 (c) not enough info (d) ₹45
15. 15.🧩 Tara is 10 years old. Arjun is older than Tara. How old is Arjun? (a) not enough info (b) 11 (c) 12 (d) 15
16. 16.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Diya is 6 years old. Meera is older than Diya. How old is Meera? (a) 7 (b) 8 (c) 11 (d) not enough info
18. 18.🧩 A box has 3 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 8 (b) 20 (c) 15 (d) not enough info
19. 19.🧩 Rohan bought 6 notebooks for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹360
20. 20.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
22. 22.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
23. 23.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
24. 24.🧩 A box has 6 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 42 (b) not enough info (c) 36 (d) 12
25. 25.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 2 PM
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
28. 28.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 16 (d) 8
29. 29.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
30. 30.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
31. 31.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
32. 32.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 10 (b) 28 (c) 21 (d) not enough info
33. 33.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 7 PM
34. 34.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
35. 35.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
36. 36.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
37. 37.🧩 Saanvi bought 3 markers and a cap for ₹175 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹175 (c) ₹58 (d) ₹172
38. 38.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) 13 (b) not enough info (c) 45 (d) 40
39. 39.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Ananya is 8 years old. Tara is older than Ananya. How old is Tara? (a) 9 (b) 13 (c) 10 (d) not enough info

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