Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 433 · 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) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
3. 3.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) yes, it is certain (d) no mango is sweet
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 7 PM (c) 4 PM (d) not enough info
6. 6.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
7. 7.🧩 Kabir bought 4 notebooks and a cap for ₹190 in all. Each notebook cost the same. What did one notebook cost? (a) ₹186 (b) ₹190 (c) not enough info (d) ₹47
8. 8.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 11 (b) 30 (c) 35 (d) not enough info
9. 9.🧩 Arjun is 6 years old. Aarav is 2 years older than Arjun. How old is Aarav? (a) 2 (b) 8 (c) not enough info (d) 9
10. 10.🧩 Aarav bought 5 markers and a cap for ₹195 in all. Each marker cost the same. What did one marker cost? (a) ₹39 (b) ₹190 (c) ₹195 (d) not enough info
11. 11.🧩 Diya bought 5 notebooks and a water bottle for ₹315 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹315 (c) ₹310 (d) ₹63
12. 12.🧩 Ananya is 11 years old. Diya is older than Ananya. How old is Diya? (a) 16 (b) not enough info (c) 12 (d) 13
13. 13.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 3 PM (c) 7 PM (d) 6 PM
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
15. 15.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) not enough info (d) 4 PM
16. 16.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
17. 17.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
18. 18.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
19. 19.🧩 Meera is 8 years old. Nisha is 8 years older than Meera. How old is Nisha? (a) 17 (b) 8 (c) 16 (d) not enough info
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
21. 21.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) 9 (c) not enough info (d) 18
22. 22.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
23. 23.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 36 (d) 42
24. 24.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Diya bought 6 kites and a water bottle for ₹220 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹214 (c) ₹220 (d) ₹36
26. 26.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
27. 27.🧩 Aarav bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹30 (c) ₹50 (d) ₹25
28. 28.🧩 Saanvi is 12 years old. Diya is older than Saanvi. How old is Diya? (a) 17 (b) 14 (c) 13 (d) not enough info
29. 29.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
30. 30.🧩 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
31. 31.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
32. 32.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
33. 33.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
36. 36.🧩 Tara bought 6 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹25 (c) ₹120 (d) ₹20
37. 37.🧩 Aarav is 10 years old. Rohan is older than Aarav. How old is Rohan? (a) 12 (b) 11 (c) not enough info (d) 15
38. 38.🧩 Meera bought 2 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹25 (c) ₹50 (d) ₹30
39. 39.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
40. 40.🧩 Nisha bought 4 mangoes and a cap for ₹290 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹286 (c) ₹72 (d) ₹290

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