Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 786 · 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.” does not give enough evidence. (a) False (b) True
2. 2.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
4. 4.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
5. 5.🧩 Aarav is 12 years old. Diya is older than Aarav. How old is Diya? (a) 17 (b) not enough info (c) 13 (d) 14
6. 6.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
7. 7.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
8. 8.🥭 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
9. 9.🧩 Ishaan bought 2 mangoes and a lunch box for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹58 (c) ₹60 (d) ₹30
10. 10.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) 7 (b) not enough info (c) 12 (d) 16
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
12. 12.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
13. 13.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
14. 14.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 6 PM
15. 15.🧩 Meera is 11 years old. Arjun is 4 years older than Meera. How old is Arjun? (a) 15 (b) 4 (c) not enough info (d) 16
16. 16.🧩 Meera bought 3 notebooks and a lunch box for ₹115 in all. Each notebook cost the same. What did one notebook cost? (a) ₹115 (b) not enough info (c) ₹112 (d) ₹38
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
18. 18.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 10 PM (c) not enough info (d) 9 PM
19. 19.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
22. 22.📊 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
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
24. 24.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 8 PM (c) 5 PM (d) not enough info
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Rohan is 7 years old. Arjun is older than Rohan. How old is Arjun? (a) 8 (b) not enough info (c) 9 (d) 12
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Meera bought 6 pens and a bag for ₹130 in all. Each pen cost the same. What did one pen cost? (a) ₹130 (b) ₹124 (c) ₹21 (d) not enough info
30. 30.🧩 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
31. 31.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
32. 32.🧩 Tara bought 3 balls and a lunch box for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹72 (b) not enough info (c) ₹25 (d) ₹75
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
34. 34.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
35. 35.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Diya bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹70
37. 37.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 13 (b) not enough info (c) 36 (d) 45
38. 38.🧩 Vihaan bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹60 (c) ₹35 (d) ₹30
39. 39.🧩 Saanvi bought 6 markers for ₹330 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) not enough info (c) ₹330 (d) ₹60
40. 40.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True

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