Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 334 · 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.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
2. 2.🧩 Saanvi bought 5 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹60 (d) ₹300
3. 3.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 4 PM (d) 7 PM
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
9. 9.🥭 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, it is certain (c) no, check more (d) yes, mangoes match
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
12. 12.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
14. 14.🧩 A box has 6 rows of apples, with 9 in each row. How many apples are in the box? (a) 63 (b) 54 (c) 15 (d) not enough info
15. 15.🧩 Ananya is 10 years old. Aarav is 2 years older than Ananya. How old is Aarav? (a) not enough info (b) 13 (c) 2 (d) 12
16. 16.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
17. 17.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
18. 18.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Nisha bought 4 kites and a bag for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹110 (b) ₹27 (c) ₹106 (d) not enough info
21. 21.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
22. 22.🧩 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
23. 23.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
24. 24.🧩 Diya bought 3 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹180 (b) ₹65 (c) not enough info (d) ₹60
25. 25.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
26. 26.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 28 (b) 10 (c) not enough info (d) 21
27. 27.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) not enough info (c) 9 PM (d) 6 PM
28. 28.🧩 Rohan bought 2 notebooks and a water bottle for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) not enough info (c) ₹108 (d) ₹55
29. 29.🧩 Rohan is 10 years old. Nisha is older than Rohan. How old is Nisha? (a) 11 (b) not enough info (c) 12 (d) 15
30. 30.🧩 A box has 4 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 32 (b) 12 (c) not enough info (d) 40
31. 31.🧩 Meera bought 6 pens for ₹270 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹270 (c) ₹45 (d) ₹50
32. 32.🧩 Aarav is 9 years old. Meera is 8 years older than Aarav. How old is Meera? (a) not enough info (b) 17 (c) 8 (d) 18
33. 33.🧩 Arjun bought 6 kites and a lunch box for ₹260 in all. Each kite cost the same. What did one kite cost? (a) ₹254 (b) ₹43 (c) ₹260 (d) not enough info
34. 34.🧩 A box has 5 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 13 (b) 48 (c) not enough info (d) 40
35. 35.🧩 Tara bought 3 kites and a lunch box for ₹70 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹67 (c) ₹23 (d) ₹70
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
37. 37.🧩 Aarav is 10 years old. Meera is 4 years older than Aarav. How old is Meera? (a) 15 (b) not enough info (c) 14 (d) 4
38. 38.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
39. 39.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 3 PM
40. 40.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 11 (b) 30 (c) 36 (d) not enough info

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