Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 136 · 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 of guavas has 5 in each row. How many guavas are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
2. 2.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
3. 3.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
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.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
7. 7.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
8. 8.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 4 PM
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
10. 10.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Saanvi bought 3 balls and a water bottle for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹267 (b) ₹90 (c) not enough info (d) ₹270
13. 13.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
14. 14.🧩 Arjun bought 3 notebooks and a water bottle for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹90 (c) ₹87 (d) ₹30
15. 15.🧩 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
16. 16.🧩 Kabir bought 6 kites and a water bottle for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹174 (c) not enough info (d) ₹180
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Ananya bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹10
19. 19.🧩 Vihaan is 11 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) 16 (b) 12 (c) 13 (d) not enough info
20. 20.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 2 PM
21. 21.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
23. 23.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
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.🧩 Diya bought 3 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹90 (b) ₹30 (c) ₹35 (d) not enough info
26. 26.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 7 PM
27. 27.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 25 (b) 9 (c) not enough info (d) 20
28. 28.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
29. 29.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 7 PM
30. 30.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) 18 (c) not enough info (d) 90
31. 31.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
33. 33.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 3 PM
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
36. 36.🧩 Nisha is 6 years old. Ananya is older than Nisha. How old is Ananya? (a) 8 (b) 11 (c) 7 (d) not enough info
37. 37.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 32 (d) 36
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Kabir is 12 years old. Meera is older than Kabir. How old is Meera? (a) 14 (b) not enough info (c) 17 (d) 13
40. 40.🧩 Nisha is 8 years old. Meera is older than Nisha. How old is Meera? (a) 13 (b) 10 (c) not enough info (d) 9

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