Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 126 · 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.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
3. 3.🧩 A box has 4 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 12 (b) not enough info (c) 32 (d) 40
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 3 PM
6. 6.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
7. 7.🧩 Aarav bought 3 balls and a water bottle for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) not enough info (c) ₹197 (d) ₹66
8. 8.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Aarav bought 4 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹80 (c) ₹20 (d) ₹25
10. 10.🧩 A box has 4 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 16 (b) 8 (c) 20 (d) not enough info
11. 11.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
12. 12.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 9 PM
13. 13.🧩 Ananya is 7 years old. Meera is 4 years older than Ananya. How old is Meera? (a) 11 (b) not enough info (c) 12 (d) 4
14. 14.🧩 Meera is 12 years old. Vihaan is older than Meera. How old is Vihaan? (a) 13 (b) 14 (c) not enough info (d) 17
15. 15.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Meera is 10 years old. Tara is older than Meera. How old is Tara? (a) 11 (b) 15 (c) not enough info (d) 12
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
20. 20.🧩 Diya bought 6 kites and a bag for ₹320 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹314 (c) ₹320 (d) ₹53
21. 21.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
22. 22.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
23. 23.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 40 (b) 12 (c) 35 (d) not enough info
24. 24.🧩 Diya is 7 years old. Rohan is older than Diya. How old is Rohan? (a) 9 (b) 12 (c) not enough info (d) 8
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
26. 26.🧩 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
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
28. 28.🧩 Meera is 12 years old. Diya is 6 years older than Meera. How old is Diya? (a) not enough info (b) 18 (c) 6 (d) 19
29. 29.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Aarav bought 6 balls for ₹210 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹210
31. 31.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
33. 33.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
34. 34.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
35. 35.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
36. 36.🧩 A box has 7 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 15 (b) 64 (c) not enough info (d) 56
37. 37.🧩 Vihaan bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹70 (d) ₹35
38. 38.🧩 Kabir bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹10
39. 39.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
40. 40.🧩 Vihaan is 7 years old. Saanvi is 4 years older than Vihaan. How old is Saanvi? (a) 11 (b) 12 (c) 4 (d) not enough info

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