Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 157 · 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: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
2. 2.🧩 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
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) 8 (b) 20 (c) 16 (d) not enough info
5. 5.🧩 Arjun bought 3 balls and a lunch box for ₹225 in all. Each ball cost the same. What did one ball cost? (a) ₹222 (b) not enough info (c) ₹75 (d) ₹225
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Arjun is 12 years old. Ananya is older than Arjun. How old is Ananya? (a) not enough info (b) 14 (c) 17 (d) 13
8. 8.🧩 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
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
10. 10.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Kabir bought 4 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹25 (c) ₹30 (d) ₹100
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
14. 14.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
15. 15.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
16. 16.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
17. 17.🧩 Nisha is 11 years old. Saanvi is 2 years older than Nisha. How old is Saanvi? (a) not enough info (b) 14 (c) 13 (d) 2
18. 18.🧩 Vihaan bought 2 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹80
19. 19.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
20. 20.🧩 Meera is 7 years old. Nisha is older than Meera. How old is Nisha? (a) not enough info (b) 9 (c) 12 (d) 8
21. 21.🧩 Vihaan is 6 years old. Diya is 6 years older than Vihaan. How old is Diya? (a) 13 (b) 6 (c) not enough info (d) 12
22. 22.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
23. 23.🧩 Ishaan bought 2 mangoes and a lunch box for ₹70 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹68 (c) ₹35 (d) ₹70
24. 24.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 8 PM
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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
28. 28.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
29. 29.🧩 Vihaan is 6 years old. Kabir is older than Vihaan. How old is Kabir? (a) 11 (b) 7 (c) not enough info (d) 8
30. 30.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
31. 31.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
32. 32.🧩 Arjun bought 3 mangoes and a bag for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹117 (b) ₹40 (c) ₹120 (d) not enough info
33. 33.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 4 PM
34. 34.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
35. 35.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
36. 36.🧩 Ananya is 7 years old. Aarav is 2 years older than Ananya. How old is Aarav? (a) 10 (b) not enough info (c) 2 (d) 9
37. 37.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
38. 38.🧩 Kabir bought 2 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹30 (c) ₹50 (d) ₹25
39. 39.🧩 Meera is 10 years old. Vihaan is 8 years older than Meera. How old is Vihaan? (a) 19 (b) 8 (c) not enough info (d) 18
40. 40.🧩 Ananya bought 3 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹120 (b) ₹45 (c) not enough info (d) ₹40

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