Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 894 · 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 tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
2. 2.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
5. 5.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
6. 6.🧩 Kabir is 6 years old. Diya is older than Kabir. How old is Diya? (a) 8 (b) not enough info (c) 11 (d) 7
7. 7.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
8. 8.🧩 A box has 7 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 72 (b) 16 (c) not enough info (d) 63
9. 9.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Vihaan is 7 years old. Ishaan is older than Vihaan. How old is Ishaan? (a) 9 (b) not enough info (c) 12 (d) 8
12. 12.🧩 Meera bought 3 kites and a lunch box for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) ₹60 (c) ₹177 (d) not enough info
13. 13.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (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.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
17. 17.🧩 Rohan is 9 years old. Ananya is 8 years older than Rohan. How old is Ananya? (a) 17 (b) 8 (c) not enough info (d) 18
18. 18.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
21. 21.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
22. 22.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
23. 23.🧩 Nisha bought 2 kites and a lunch box for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹100 (b) ₹98 (c) not enough info (d) ₹50
24. 24.🧩 Meera bought 3 pens for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) not enough info (c) ₹45 (d) ₹135
25. 25.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
26. 26.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
27. 27.🐕 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
28. 28.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
29. 29.🧩 Nisha is 8 years old. Arjun is older than Nisha. How old is Arjun? (a) not enough info (b) 13 (c) 10 (d) 9
30. 30.🧩 A box has 7 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 40 (b) not enough info (c) 35 (d) 12
31. 31.🧩 Meera bought 3 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹20 (d) ₹25
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
34. 34.🧩 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
35. 35.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
36. 36.🧩 Rohan is 11 years old. Saanvi is 8 years older than Rohan. How old is Saanvi? (a) 8 (b) 19 (c) 20 (d) not enough info
37. 37.🥭 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) yes, mangoes match (c) yes, it is certain (d) no, check more
38. 38.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 2 PM
39. 39.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 48 (b) not enough info (c) 13 (d) 42
40. 40.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) not enough info (c) 10 (d) 50

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