Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 848 · 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.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
2. 2.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
3. 3.🧩 Saanvi is 6 years old. Ishaan is 7 years older than Saanvi. How old is Ishaan? (a) 13 (b) not enough info (c) 7 (d) 14
4. 4.🧩 Ananya bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹275 (c) ₹60 (d) ₹55
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Kabir bought 3 pens for ₹75 in all. Each pen cost the same. What did one pen cost? (a) ₹75 (b) ₹30 (c) ₹25 (d) not enough info
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
9. 9.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 10 (c) 5 (d) not enough info
10. 10.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
11. 11.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
12. 12.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 16 (b) not enough info (c) 72 (d) 64
13. 13.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
16. 16.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 16 (b) 7 (c) not enough info (d) 12
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Rohan is 12 years old. Vihaan is older than Rohan. How old is Vihaan? (a) 13 (b) not enough info (c) 17 (d) 14
19. 19.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
20. 20.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
21. 21.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
22. 22.🧩 Diya bought 2 markers and a water bottle for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹75 (b) not enough info (c) ₹148 (d) ₹150
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Kabir is 11 years old. Aarav is older than Kabir. How old is Aarav? (a) 12 (b) 16 (c) 13 (d) not enough info
25. 25.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
26. 26.🧩 Ishaan is 10 years old. Kabir is older than Ishaan. How old is Kabir? (a) 15 (b) not enough info (c) 12 (d) 11
27. 27.🧩 Vihaan bought 5 pens and a cap for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹135 (b) ₹140 (c) ₹28 (d) not enough info
28. 28.🧩 Rohan is 11 years old. Saanvi is 5 years older than Rohan. How old is Saanvi? (a) not enough info (b) 5 (c) 16 (d) 17
29. 29.🧩 Ishaan bought 3 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹25 (d) ₹20
30. 30.🧩 Nisha is 6 years old. Ishaan is 7 years older than Nisha. How old is Ishaan? (a) not enough info (b) 13 (c) 14 (d) 7
31. 31.🧩 Tara bought 4 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) not enough info (c) ₹40 (d) ₹10
32. 32.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
33. 33.🧩 Arjun bought 3 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹60
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.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
36. 36.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 56 (c) 14 (d) 49
37. 37.🧩 Kabir is 9 years old. Rohan is older than Kabir. How old is Rohan? (a) 10 (b) 11 (c) not enough info (d) 14
38. 38.🧩 Tara is 12 years old. Kabir is older than Tara. How old is Kabir? (a) 14 (b) 13 (c) 17 (d) not enough info
39. 39.🧩 Rohan bought 6 mangoes and a cap for ₹360 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹354 (c) ₹360 (d) ₹60
40. 40.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 24 (c) 28 (d) 10

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