Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 498 · 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.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
4. 4.🧩 Saanvi is 8 years old. Kabir is older than Saanvi. How old is Kabir? (a) 9 (b) 13 (c) 10 (d) not enough info
5. 5.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
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
8. 8.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
9. 9.🧩 Vihaan is 7 years old. Diya is 5 years older than Vihaan. How old is Diya? (a) 5 (b) 13 (c) 12 (d) not enough info
10. 10.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) not enough info (d) 6 PM
11. 11.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
12. 12.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
13. 13.🧩 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
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Ananya is 9 years old. Diya is 5 years older than Ananya. How old is Diya? (a) not enough info (b) 15 (c) 5 (d) 14
17. 17.🧩 Tara is 9 years old. Rohan is older than Tara. How old is Rohan? (a) 14 (b) 11 (c) 10 (d) not enough info
18. 18.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
19. 19.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
20. 20.🧩 Ananya bought 2 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹65 (c) ₹120 (d) not enough info
21. 21.🧩 Kabir bought 4 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹120 (c) ₹30 (d) not enough info
22. 22.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 20 (b) 15 (c) not enough info (d) 8
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
24. 24.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
25. 25.🧩 Kabir bought 2 pens and a water bottle for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹98 (c) not enough info (d) ₹100
26. 26.🧩 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
27. 27.🧩 Tara is 6 years old. Kabir is older than Tara. How old is Kabir? (a) not enough info (b) 11 (c) 8 (d) 7
28. 28.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
29. 29.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
31. 31.🧩 A box has 8 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 36 (b) 32 (c) 12 (d) not enough info
32. 32.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 10 (b) 28 (c) not enough info (d) 24
33. 33.🧩 Diya bought 4 markers and a lunch box for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹126 (b) not enough info (c) ₹130 (d) ₹32
34. 34.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
35. 35.🧩 Aarav is 12 years old. Diya is 5 years older than Aarav. How old is Diya? (a) 5 (b) 18 (c) 17 (d) not enough info
36. 36.🧩 A box has 7 rows of apples, with 8 in each row. How many apples are in the box? (a) 56 (b) 64 (c) 15 (d) not enough info
37. 37.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, it is certain (d) yes, mangoes match
38. 38.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 5 (c) not enough info (d) 50
39. 39.🧩 Diya is 6 years old. Meera is 4 years older than Diya. How old is Meera? (a) 4 (b) not enough info (c) 10 (d) 11
40. 40.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only

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