Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 480 · 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 tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
2. 2.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
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
6. 6.🧩 Vihaan bought 4 kites and a cap for ₹220 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹55 (c) ₹220 (d) ₹216
7. 7.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
9. 9.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
12. 12.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
13. 13.🧩 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
14. 14.🧩 Ananya bought 2 markers and a bag for ₹70 in all. Each marker cost the same. What did one marker cost? (a) ₹68 (b) ₹70 (c) not enough info (d) ₹35
15. 15.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 2 PM
16. 16.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
18. 18.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
19. 19.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
20. 20.🧩 Vihaan bought 4 balls for ₹220 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹220 (c) ₹60 (d) not enough info
21. 21.🧩 Saanvi is 9 years old. Nisha is 7 years older than Saanvi. How old is Nisha? (a) 16 (b) not enough info (c) 7 (d) 17
22. 22.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
23. 23.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
24. 24.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
28. 28.🧩 Nisha is 9 years old. Aarav is 5 years older than Nisha. How old is Aarav? (a) 5 (b) 15 (c) not enough info (d) 14
29. 29.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
30. 30.🧩 Aarav is 6 years old. Arjun is older than Aarav. How old is Arjun? (a) not enough info (b) 8 (c) 7 (d) 11
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.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
33. 33.🧩 Rohan is 12 years old. Vihaan is 3 years older than Rohan. How old is Vihaan? (a) 3 (b) not enough info (c) 16 (d) 15
34. 34.🧩 Rohan is 7 years old. Meera is older than Rohan. How old is Meera? (a) not enough info (b) 8 (c) 9 (d) 12
35. 35.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 6 (c) not enough info (d) 60
36. 36.🧩 A box has 8 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 45 (b) 13 (c) 40 (d) not enough info
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box has 7 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 56 (b) 15 (c) 64 (d) not enough info
40. 40.🧩 Meera bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) ₹30 (c) ₹25 (d) not enough info

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