Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 842 · 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 tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
2. 2.🧩 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
3. 3.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
5. 5.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 6 PM
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
8. 8.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
10. 10.🧩 Diya is 7 years old. Nisha is older than Diya. How old is Nisha? (a) 12 (b) 8 (c) not enough info (d) 9
11. 11.🧩 Rohan is 7 years old. Vihaan is older than Rohan. How old is Vihaan? (a) 8 (b) not enough info (c) 9 (d) 12
12. 12.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
13. 13.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
14. 14.🧩 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
15. 15.🧩 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
16. 16.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
17. 17.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
18. 18.🧩 Nisha is 11 years old. Meera is older than Nisha. How old is Meera? (a) 12 (b) 16 (c) not enough info (d) 13
19. 19.🧩 Saanvi bought 4 pens and a lunch box for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹156 (b) ₹40 (c) not enough info (d) ₹160
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Kabir bought 4 pens and a lunch box for ₹260 in all. Each pen cost the same. What did one pen cost? (a) ₹256 (b) ₹260 (c) ₹65 (d) not enough info
24. 24.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
26. 26.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
27. 27.🧩 Meera is 10 years old. Saanvi is older than Meera. How old is Saanvi? (a) 15 (b) 11 (c) not enough info (d) 12
28. 28.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
29. 29.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
30. 30.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
32. 32.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
33. 33.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) 16 (b) 12 (c) 7 (d) not enough info
34. 34.🧩 Aarav is 6 years old. Ananya is 8 years older than Aarav. How old is Ananya? (a) not enough info (b) 14 (c) 8 (d) 15
35. 35.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
37. 37.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
38. 38.🧩 Meera is 10 years old. Tara is 9 years older than Meera. How old is Tara? (a) 20 (b) 19 (c) not enough info (d) 9
39. 39.🧩 A box has 7 rows of apples, with 8 in each row. How many apples are in the box? (a) 15 (b) 56 (c) not enough info (d) 64
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True

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