Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 479 · 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 tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
2. 2.🧩 Tara is 9 years old. Nisha is 7 years older than Tara. How old is Nisha? (a) not enough info (b) 17 (c) 7 (d) 16
3. 3.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
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
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.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
9. 9.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
10. 10.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
11. 11.🧩 Arjun bought 4 markers and a lunch box for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹146 (b) ₹37 (c) ₹150 (d) not enough info
12. 12.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
13. 13.🧩 A box has 8 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 17 (b) not enough info (c) 81 (d) 72
14. 14.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
15. 15.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, mangoes match (d) yes, it is certain
16. 16.🧩 A box has 6 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 35 (b) not enough info (c) 30 (d) 11
17. 17.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
18. 18.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 36 (d) 27
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
20. 20.🧩 Nisha bought 3 markers for ₹165 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹165 (c) ₹60 (d) not enough info
21. 21.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
22. 22.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Vihaan bought 3 kites and a water bottle for ₹190 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹190 (c) ₹63 (d) ₹187
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 28 (b) 10 (c) not enough info (d) 24
27. 27.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
28. 28.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) 3 PM (d) not enough info
29. 29.🧩 A box has 6 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 24 (b) not enough info (c) 28 (d) 10
30. 30.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 20 (b) 9 (c) not enough info (d) 24
31. 31.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
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 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
34. 34.📊 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
35. 35.🧩 Vihaan bought 2 pens and a water bottle for ₹190 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹95 (c) ₹188 (d) ₹190
36. 36.🧩 A box has 4 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 9 (b) not enough info (c) 20 (d) 25
37. 37.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
38. 38.🧩 Kabir is 10 years old. Nisha is 5 years older than Kabir. How old is Nisha? (a) 5 (b) not enough info (c) 15 (d) 16
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
40. 40.🧩 A box has 4 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 16 (b) 8 (c) 20 (d) not enough info

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