Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 58 · 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 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) 7 PM (d) not enough info
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
3. 3.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
4. 4.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) no, check more (d) yes, mangoes match
5. 5.📊 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
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Diya bought 6 balls and a water bottle for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹270 (b) not enough info (c) ₹45 (d) ₹264
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
9. 9.🧩 Ananya bought 2 notebooks and a bag for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹140 (b) ₹138 (c) not enough info (d) ₹70
10. 10.🧩 Vihaan bought 2 pens and a cap for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹100 (c) ₹98 (d) not enough info
11. 11.🧩 Kabir bought 5 kites for ₹250 in all. Each kite cost the same. What did one kite cost? (a) ₹250 (b) ₹55 (c) not enough info (d) ₹50
12. 12.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
13. 13.🧩 Rohan is 9 years old. Diya is 8 years older than Rohan. How old is Diya? (a) 8 (b) not enough info (c) 17 (d) 18
14. 14.🧩 Diya is 9 years old. Aarav is older than Diya. How old is Aarav? (a) 11 (b) 14 (c) not enough info (d) 10
15. 15.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 90 (c) 9 (d) 18
16. 16.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
17. 17.🧩 Kabir is 11 years old. Aarav is 5 years older than Kabir. How old is Aarav? (a) not enough info (b) 16 (c) 5 (d) 17
18. 18.🧩 Ananya bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) ₹40 (c) not enough info (d) ₹45
19. 19.🧩 Ananya is 8 years old. Meera is 3 years older than Ananya. How old is Meera? (a) 11 (b) 12 (c) not enough info (d) 3
20. 20.🧩 Rohan is 7 years old. Vihaan is older than Rohan. How old is Vihaan? (a) 9 (b) 12 (c) 8 (d) not enough info
21. 21.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
22. 22.🧩 Kabir is 6 years old. Tara is older than Kabir. How old is Tara? (a) 7 (b) 8 (c) 11 (d) not enough info
23. 23.🧩 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
24. 24.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
25. 25.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
26. 26.🧩 Arjun is 12 years old. Vihaan is 4 years older than Arjun. How old is Vihaan? (a) not enough info (b) 16 (c) 17 (d) 4
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
28. 28.🧩 Ishaan bought 6 kites and a water bottle for ₹330 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹55 (c) ₹330 (d) ₹324
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Meera is 8 years old. Aarav is older than Meera. How old is Aarav? (a) not enough info (b) 10 (c) 13 (d) 9
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
32. 32.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Rohan bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹20
35. 35.🧩 Rohan bought 6 kites and a lunch box for ₹300 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹294 (c) not enough info (d) ₹300
36. 36.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 8 (b) 20 (c) not enough info (d) 15
37. 37.🧩 Ananya is 9 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 11 (b) not enough info (c) 14 (d) 10
38. 38.🧩 Arjun bought 3 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) ₹45 (c) not enough info (d) ₹120
39. 39.🧩 Meera bought 4 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹240
40. 40.🧩 Arjun is 10 years old. Saanvi is 9 years older than Arjun. How old is Saanvi? (a) 9 (b) not enough info (c) 20 (d) 19

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