Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 850 · 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 checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
2. 2.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
3. 3.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
4. 4.🧩 Vihaan is 10 years old. Ishaan is older than Vihaan. How old is Ishaan? (a) 15 (b) 12 (c) not enough info (d) 11
5. 5.🧩 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
6. 6.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
7. 7.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
8. 8.🧩 Saanvi is 8 years old. Ishaan is 8 years older than Saanvi. How old is Ishaan? (a) 8 (b) 16 (c) not enough info (d) 17
9. 9.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) 36 (b) 32 (c) 12 (d) not enough info
10. 10.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
11. 11.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Saanvi bought 3 kites and a lunch box for ₹150 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹147 (c) ₹50 (d) ₹150
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
14. 14.🧩 A box has 6 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 13 (b) not enough info (c) 49 (d) 42
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
17. 17.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
18. 18.🧩 Ishaan is 11 years old. Diya is older than Ishaan. How old is Diya? (a) 12 (b) 13 (c) 16 (d) not enough info
19. 19.🧩 Meera is 12 years old. Rohan is older than Meera. How old is Rohan? (a) 17 (b) 13 (c) 14 (d) not enough info
20. 20.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
21. 21.🧩 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
22. 22.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
26. 26.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
27. 27.🧩 Saanvi bought 4 pens and a bag for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹96 (b) ₹25 (c) not enough info (d) ₹100
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
29. 29.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
30. 30.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no, check more (d) no mango is sweet
31. 31.🐕 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
32. 32.🧩 Rohan is 10 years old. Vihaan is 7 years older than Rohan. How old is Vihaan? (a) 18 (b) not enough info (c) 17 (d) 7
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
34. 34.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 12 (b) 60 (c) not enough info (d) 6
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
36. 36.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
37. 37.🧩 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
38. 38.🧩 Aarav is 11 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 16 (b) 12 (c) 13 (d) not enough info
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
40. 40.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

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