Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 17 · 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.🧩 Meera is 6 years old. Ananya is older than Meera. How old is Ananya? (a) 7 (b) 8 (c) 11 (d) not enough info
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
4. 4.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 6 PM
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Kabir is 8 years old. Vihaan is 8 years older than Kabir. How old is Vihaan? (a) 8 (b) not enough info (c) 17 (d) 16
8. 8.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
9. 9.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
10. 10.🧩 Arjun bought 4 notebooks for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹45 (c) ₹160 (d) not enough info
11. 11.🥭 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, mangoes match (d) yes, it is certain
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
13. 13.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
14. 14.🧩 Kabir is 8 years old. Tara is 2 years older than Kabir. How old is Tara? (a) 10 (b) 11 (c) not enough info (d) 2
15. 15.🧩 Meera bought 2 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹25 (c) ₹30 (d) not enough info
16. 16.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
17. 17.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
18. 18.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
19. 19.🧩 Nisha is 9 years old. Diya is older than Nisha. How old is Diya? (a) 10 (b) 11 (c) not enough info (d) 14
20. 20.🧩 Saanvi bought 5 kites and a water bottle for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹28 (b) ₹140 (c) not enough info (d) ₹135
21. 21.🧩 A box has 6 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 48 (b) 14 (c) not enough info (d) 56
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
25. 25.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
26. 26.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 9 PM (d) not enough info
27. 27.🧩 Diya is 10 years old. Rohan is older than Diya. How old is Rohan? (a) 15 (b) 11 (c) 12 (d) not enough info
28. 28.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
30. 30.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
31. 31.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
32. 32.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
34. 34.🧩 Tara is 11 years old. Ishaan is 4 years older than Tara. How old is Ishaan? (a) 15 (b) 16 (c) not enough info (d) 4
35. 35.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
36. 36.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
37. 37.🧩 Arjun is 10 years old. Ishaan is 8 years older than Arjun. How old is Ishaan? (a) not enough info (b) 8 (c) 18 (d) 19
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 10 (b) 28 (c) not enough info (d) 24
40. 40.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 6 (b) 12 (c) not enough info (d) 60

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