Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 60 · 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.🧩 Nisha bought 2 pens and a lunch box for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹108 (b) not enough info (c) ₹55 (d) ₹110
2. 2.🧩 Rohan is 11 years old. Arjun is older than Rohan. How old is Arjun? (a) 16 (b) not enough info (c) 12 (d) 13
3. 3.🥭 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) yes, mangoes match (c) no, check more (d) yes, it is certain
4. 4.🧩 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
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.🧩 Aarav is 10 years old. Meera is older than Aarav. How old is Meera? (a) 15 (b) not enough info (c) 12 (d) 11
7. 7.🧩 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
8. 8.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
9. 9.🧩 Meera bought 3 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) ₹45 (c) ₹40 (d) not enough info
10. 10.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
11. 11.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) 8 PM (d) not enough info
12. 12.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
13. 13.🧩 Vihaan bought 4 kites and a cap for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹106 (b) not enough info (c) ₹110 (d) ₹27
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Kabir is 12 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 14 (b) 17 (c) 13 (d) not enough info
16. 16.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
17. 17.🧩 Kabir bought 3 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹75 (c) ₹30 (d) ₹25
18. 18.🧩 Vihaan bought 5 balls and a cap for ₹315 in all. Each ball cost the same. What did one ball cost? (a) ₹310 (b) not enough info (c) ₹315 (d) ₹63
19. 19.🧩 A box has 4 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 10 (b) not enough info (c) 30 (d) 24
20. 20.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 7 PM
21. 21.🧩 Saanvi bought 4 kites for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) not enough info (c) ₹25 (d) ₹80
22. 22.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
23. 23.🧩 A box has 3 rows of apples, with 8 in each row. How many apples are in the box? (a) 24 (b) 11 (c) 32 (d) not enough info
24. 24.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 5 PM
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
26. 26.🧩 Arjun is 6 years old. Ishaan is older than Arjun. How old is Ishaan? (a) 7 (b) 11 (c) not enough info (d) 8
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
28. 28.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
30. 30.🧩 Ishaan is 7 years old. Saanvi is 2 years older than Ishaan. How old is Saanvi? (a) 10 (b) not enough info (c) 9 (d) 2
31. 31.🧩 A box has 6 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 36 (b) not enough info (c) 12 (d) 42
32. 32.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
33. 33.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
34. 34.🧩 Aarav bought 6 markers for ₹210 in all. Each marker cost the same. What did one marker cost? (a) ₹40 (b) ₹35 (c) ₹210 (d) not enough info
35. 35.🧩 Saanvi bought 4 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹80 (c) ₹25 (d) ₹20
36. 36.🧩 A box has 4 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 8 (c) 20 (d) 16
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
38. 38.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
40. 40.🧩 Diya is 11 years old. Tara is older than Diya. How old is Tara? (a) 12 (b) 16 (c) 13 (d) not enough info

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