Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 45 · 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 asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Aarav bought 3 markers and a lunch box for ₹110 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹107 (c) ₹110 (d) ₹36
3. 3.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 15 (c) 8 (d) 20
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
5. 5.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) 8 (c) not enough info (d) 16
6. 6.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
7. 7.🧩 Tara is 12 years old. Meera is older than Tara. How old is Meera? (a) 17 (b) 13 (c) not enough info (d) 14
8. 8.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
9. 9.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
10. 10.🥭 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 mango is sweet (c) no, check more (d) yes, it is certain
11. 11.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 5 PM
12. 12.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
13. 13.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
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
15. 15.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
16. 16.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
17. 17.🧩 Tara is 12 years old. Kabir is older than Tara. How old is Kabir? (a) 14 (b) 13 (c) not enough info (d) 17
18. 18.🧩 Rohan is 8 years old. Kabir is 4 years older than Rohan. How old is Kabir? (a) 12 (b) 13 (c) not enough info (d) 4
19. 19.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 2 PM (d) not enough info
20. 20.🧩 Arjun is 6 years old. Diya is older than Arjun. How old is Diya? (a) not enough info (b) 8 (c) 7 (d) 11
21. 21.🧩 Kabir is 10 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 11 (b) not enough info (c) 15 (d) 12
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
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.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 42 (c) 48 (d) 13
26. 26.🧩 A box has 4 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 32 (b) 12 (c) not enough info (d) 40
27. 27.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 9 PM (c) 10 PM (d) not enough info
28. 28.🧩 Aarav is 9 years old. Diya is older than Aarav. How old is Diya? (a) 10 (b) 14 (c) 11 (d) not enough info
29. 29.🧩 Saanvi bought 3 balls and a lunch box for ₹80 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹77 (c) ₹80 (d) ₹26
30. 30.🧩 Ishaan bought 3 pens and a lunch box for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹70 (b) ₹207 (c) not enough info (d) ₹210
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Vihaan is 6 years old. Saanvi is 4 years older than Vihaan. How old is Saanvi? (a) 4 (b) 11 (c) 10 (d) not enough info
33. 33.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 36 (b) 32 (c) 12 (d) not enough info
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
36. 36.🧩 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
37. 37.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
38. 38.🧩 Ananya bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹55 (c) ₹100 (d) ₹50
39. 39.🧩 Ananya bought 6 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹30 (c) ₹150 (d) not enough info
40. 40.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it

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