Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 150 · 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.🧩 Arjun bought 6 mangoes for ₹330 in all. Each mango cost the same. What did one mango cost? (a) ₹330 (b) not enough info (c) ₹60 (d) ₹55
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
4. 4.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 24 (b) 20 (c) 9 (d) not enough info
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
6. 6.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
9. 9.🧩 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
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
14. 14.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
15. 15.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
16. 16.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
17. 17.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
20. 20.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 9 PM
21. 21.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
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.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
24. 24.🧩 A box has 8 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 56 (c) 63 (d) 15
25. 25.🧩 Vihaan is 12 years old. Saanvi is 9 years older than Vihaan. How old is Saanvi? (a) not enough info (b) 22 (c) 21 (d) 9
26. 26.🧩 Kabir is 9 years old. Ananya is 4 years older than Kabir. How old is Ananya? (a) 14 (b) not enough info (c) 4 (d) 13
27. 27.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
28. 28.🧩 Ananya bought 2 markers and a lunch box for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹48 (b) not enough info (c) ₹50 (d) ₹25
29. 29.🧩 Diya bought 5 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹75
30. 30.🧩 Arjun bought 5 pens and a water bottle for ₹330 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹66 (c) ₹325 (d) ₹330
31. 31.🧩 Ananya is 11 years old. Meera is 9 years older than Ananya. How old is Meera? (a) 9 (b) not enough info (c) 21 (d) 20
32. 32.🧩 Vihaan bought 6 markers and a water bottle for ₹310 in all. Each marker cost the same. What did one marker cost? (a) ₹304 (b) ₹51 (c) ₹310 (d) not enough info
33. 33.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
34. 34.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
35. 35.🧩 Aarav is 6 years old. Meera is 2 years older than Aarav. How old is Meera? (a) 8 (b) not enough info (c) 2 (d) 9
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.🧩 Nisha bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) ₹45 (c) ₹40 (d) not enough info
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
39. 39.🧩 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
40. 40.🧩 Aarav bought 2 mangoes and a bag for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹20 (c) ₹38 (d) not enough info

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