Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 528 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
2. 2.🧩 Saanvi bought 6 kites for ₹210 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹210 (c) not enough info (d) ₹35
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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
5. 5.🧩 Rohan is 8 years old. Ishaan is 8 years older than Rohan. How old is Ishaan? (a) 17 (b) not enough info (c) 16 (d) 8
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
7. 7.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
8. 8.🧩 Rohan is 8 years old. Diya is 9 years older than Rohan. How old is Diya? (a) 18 (b) 17 (c) not enough info (d) 9
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
10. 10.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
11. 11.🧩 Rohan bought 4 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹15 (d) ₹10
12. 12.🧩 Tara bought 2 balls and a bag for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹148 (b) not enough info (c) ₹75 (d) ₹150
13. 13.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
14. 14.🧩 Rohan bought 2 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹30 (d) ₹15
15. 15.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
16. 16.🧩 A box has 4 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 35 (b) 28 (c) 11 (d) not enough info
17. 17.🧩 Aarav is 11 years old. Arjun is 6 years older than Aarav. How old is Arjun? (a) 18 (b) not enough info (c) 6 (d) 17
18. 18.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 7 PM
19. 19.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
20. 20.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 2 PM
21. 21.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
23. 23.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
25. 25.🧩 Kabir is 12 years old. Saanvi is older than Kabir. How old is Saanvi? (a) 14 (b) 17 (c) 13 (d) not enough info
26. 26.🧩 Vihaan bought 2 balls for ₹30 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹30 (c) not enough info (d) ₹15
27. 27.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
29. 29.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
31. 31.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
32. 32.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
33. 33.🧩 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
34. 34.🧩 Ishaan bought 3 mangoes and a bag for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹20 (c) ₹60 (d) ₹57
35. 35.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
36. 36.🧩 Nisha bought 4 mangoes and a lunch box for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹60 (c) ₹240 (d) ₹236
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
38. 38.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
39. 39.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
40. 40.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True

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