Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 866 · 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.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
2. 2.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
3. 3.🧩 Saanvi bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹120 (c) not enough info (d) ₹30
4. 4.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
5. 5.🧩 Aarav is 6 years old. Meera is older than Aarav. How old is Meera? (a) 7 (b) not enough info (c) 8 (d) 11
6. 6.🧩 Meera is 11 years old. Nisha is 3 years older than Meera. How old is Nisha? (a) 15 (b) 14 (c) not enough info (d) 3
7. 7.🐕 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
8. 8.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
9. 9.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
10. 10.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) 7 PM (d) not enough info
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
13. 13.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
14. 14.🧩 Ananya is 7 years old. Vihaan is 7 years older than Ananya. How old is Vihaan? (a) 15 (b) 7 (c) 14 (d) not enough info
15. 15.🧩 Ishaan bought 6 notebooks for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹35 (c) ₹210 (d) ₹40
16. 16.🧩 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
17. 17.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
18. 18.🧩 Nisha bought 3 markers and a water bottle for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹147 (b) ₹150 (c) ₹50 (d) not enough info
19. 19.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Saanvi bought 4 kites for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹140
22. 22.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
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
24. 24.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
25. 25.🧩 Ishaan bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹90 (c) not enough info (d) ₹20
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
27. 27.🧩 Vihaan is 6 years old. Diya is older than Vihaan. How old is Diya? (a) 8 (b) 11 (c) 7 (d) not enough info
28. 28.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Diya is 7 years old. Kabir is 8 years older than Diya. How old is Kabir? (a) 8 (b) 16 (c) 15 (d) not enough info
30. 30.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
31. 31.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Meera bought 2 mangoes and a water bottle for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹120 (c) not enough info (d) ₹118
33. 33.🥭 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) yes, it is certain (d) no, check more
34. 34.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
35. 35.🧩 Arjun bought 4 pens for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹140 (b) ₹40 (c) not enough info (d) ₹35
36. 36.🧩 A box has 5 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 25 (b) 10 (c) 30 (d) not enough info
37. 37.🧩 Diya bought 4 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹100 (b) not enough info (c) ₹25 (d) ₹30
38. 38.🧩 Kabir is 8 years old. Ananya is 8 years older than Kabir. How old is Ananya? (a) 8 (b) 16 (c) 17 (d) not enough info
39. 39.🧩 Arjun bought 6 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) not enough info (c) ₹50 (d) ₹55
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True

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