Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 193 · 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 change answers (b) to waste time (c) to be sure of results (d) for fun only
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
3. 3.🧩 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
4. 4.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Vihaan bought 5 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) not enough info (c) ₹50 (d) ₹10
6. 6.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Ishaan is 7 years old. Nisha is older than Ishaan. How old is Nisha? (a) not enough info (b) 8 (c) 12 (d) 9
8. 8.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
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
10. 10.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
12. 12.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
13. 13.🧩 Tara bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹10 (c) ₹20 (d) not enough info
14. 14.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Aarav is 7 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 9 (b) not enough info (c) 8 (d) 12
17. 17.🧩 Meera bought 5 notebooks for ₹250 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹250 (c) ₹50 (d) ₹55
18. 18.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
19. 19.🧩 Ishaan is 12 years old. Tara is older than Ishaan. How old is Tara? (a) not enough info (b) 13 (c) 17 (d) 14
20. 20.🥭 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) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Ananya bought 5 mangoes for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹200 (b) ₹45 (c) not enough info (d) ₹40
23. 23.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
24. 24.🧩 Tara is 6 years old. Meera is 3 years older than Tara. How old is Meera? (a) 9 (b) not enough info (c) 10 (d) 3
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
26. 26.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
27. 27.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
30. 30.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
31. 31.🧩 Ananya is 11 years old. Kabir is older than Ananya. How old is Kabir? (a) not enough info (b) 12 (c) 13 (d) 16
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
33. 33.🧩 Meera is 7 years old. Vihaan is 6 years older than Meera. How old is Vihaan? (a) 14 (b) 6 (c) 13 (d) not enough info
34. 34.🧩 Vihaan is 9 years old. Arjun is older than Vihaan. How old is Arjun? (a) 10 (b) not enough info (c) 11 (d) 14
35. 35.🧩 Vihaan is 8 years old. Diya is older than Vihaan. How old is Diya? (a) 10 (b) 13 (c) 9 (d) not enough info
36. 36.🧩 Aarav is 12 years old. Kabir is 8 years older than Aarav. How old is Kabir? (a) not enough info (b) 20 (c) 21 (d) 8
37. 37.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) not enough info (c) 14 (d) 7
38. 38.🧩 Tara bought 6 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹240 (c) ₹40 (d) not enough info
39. 39.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
40. 40.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM

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