Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 326 · 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.🧩 Diya bought 6 mangoes and a bag for ₹230 in all. Each mango cost the same. What did one mango cost? (a) ₹230 (b) ₹38 (c) ₹224 (d) not enough info
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Nisha is 9 years old. Rohan is 6 years older than Nisha. How old is Rohan? (a) 15 (b) 6 (c) 16 (d) not enough info
5. 5.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
6. 6.🥭 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, check more (c) no mango is sweet (d) yes, it is certain
7. 7.🧩 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
8. 8.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
9. 9.🧩 Tara bought 3 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹60 (d) ₹20
10. 10.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Diya is 7 years old. Arjun is 5 years older than Diya. How old is Arjun? (a) not enough info (b) 5 (c) 12 (d) 13
12. 12.🧩 Diya bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹60 (c) ₹25 (d) not enough info
13. 13.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
15. 15.🧩 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
16. 16.🧩 Diya is 9 years old. Meera is 6 years older than Diya. How old is Meera? (a) not enough info (b) 15 (c) 6 (d) 16
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
18. 18.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
19. 19.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
20. 20.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
21. 21.🐕 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
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
24. 24.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
25. 25.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
26. 26.🧩 Aarav is 8 years old. Saanvi is 5 years older than Aarav. How old is Saanvi? (a) not enough info (b) 14 (c) 13 (d) 5
27. 27.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
28. 28.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 4 PM (c) 7 PM (d) not enough info
29. 29.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 21 (b) not enough info (c) 28 (d) 10
30. 30.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
31. 31.🧩 Tara bought 2 markers for ₹20 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹10 (c) ₹15 (d) ₹20
32. 32.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
33. 33.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 11 (b) not enough info (c) 35 (d) 30
34. 34.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
35. 35.🧩 Ananya is 10 years old. Aarav is older than Ananya. How old is Aarav? (a) 12 (b) 11 (c) not enough info (d) 15
36. 36.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
37. 37.🧩 Vihaan bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹240 (c) not enough info (d) ₹40
38. 38.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 14 (c) 7 (d) not enough info
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
40. 40.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True

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