Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 827 · 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.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 36 (c) 13 (d) 45
2. 2.🧩 A box has 5 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 20 (c) 24 (d) 9
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Aarav bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) ₹65 (c) ₹60 (d) not enough info
7. 7.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
8. 8.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 18 (c) 9 (d) 90
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
11. 11.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) 12 (c) not enough info (d) 40
12. 12.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
13. 13.🧩 Arjun is 10 years old. Ishaan is 5 years older than Arjun. How old is Ishaan? (a) 16 (b) 15 (c) 5 (d) not enough info
14. 14.🧩 Ananya is 7 years old. Aarav is 8 years older than Ananya. How old is Aarav? (a) 16 (b) not enough info (c) 15 (d) 8
15. 15.🧩 Vihaan bought 5 kites for ₹225 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹50 (c) not enough info (d) ₹225
16. 16.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
18. 18.🧩 A box has 8 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 56 (b) 15 (c) not enough info (d) 63
19. 19.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 18 (b) not enough info (c) 9 (d) 90
20. 20.🧩 Arjun is 8 years old. Diya is older than Arjun. How old is Diya? (a) 13 (b) 9 (c) not enough info (d) 10
21. 21.🐕 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
22. 22.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
23. 23.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Diya is 10 years old. Saanvi is 9 years older than Diya. How old is Saanvi? (a) 20 (b) 9 (c) not enough info (d) 19
25. 25.🧩 Rohan is 8 years old. Diya is 2 years older than Rohan. How old is Diya? (a) 2 (b) 10 (c) not enough info (d) 11
26. 26.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
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
28. 28.🧩 Kabir is 10 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 11 (b) not enough info (c) 15 (d) 12
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
30. 30.🧩 Nisha bought 6 mangoes and a bag for ₹450 in all. Each mango cost the same. What did one mango cost? (a) ₹444 (b) ₹450 (c) not enough info (d) ₹75
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
32. 32.🧩 Ananya is 11 years old. Rohan is older than Ananya. How old is Rohan? (a) not enough info (b) 16 (c) 13 (d) 12
33. 33.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Saanvi bought 6 balls and a water bottle for ₹380 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹380 (c) ₹374 (d) ₹63
35. 35.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Vihaan bought 6 markers and a cap for ₹170 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹170 (c) ₹164 (d) ₹28
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Ishaan bought 2 mangoes and a cap for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹70 (b) ₹68 (c) ₹35 (d) not enough info
39. 39.🧩 Diya bought 4 markers for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) not enough info (c) ₹240 (d) ₹60
40. 40.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 30 (c) 11 (d) 35

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