Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 130 · 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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
2. 2.🧩 Aarav is 9 years old. Saanvi is 5 years older than Aarav. How old is Saanvi? (a) 15 (b) 5 (c) 14 (d) not enough info
3. 3.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Arjun is 8 years old. Aarav is 5 years older than Arjun. How old is Aarav? (a) 5 (b) 14 (c) not enough info (d) 13
5. 5.🧩 Kabir is 6 years old. Ananya is older than Kabir. How old is Ananya? (a) 8 (b) 11 (c) not enough info (d) 7
6. 6.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
8. 8.🧩 Diya is 9 years old. Aarav is 7 years older than Diya. How old is Aarav? (a) 7 (b) 16 (c) 17 (d) not enough info
9. 9.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
10. 10.🧩 Rohan bought 5 pens and a water bottle for ₹135 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹135 (c) ₹27 (d) ₹130
11. 11.🧩 Ananya is 11 years old. Arjun is older than Ananya. How old is Arjun? (a) 12 (b) not enough info (c) 16 (d) 13
12. 12.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
13. 13.🧩 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
14. 14.🧩 Rohan bought 3 mangoes and a water bottle for ₹155 in all. Each mango cost the same. What did one mango cost? (a) ₹152 (b) not enough info (c) ₹155 (d) ₹51
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
16. 16.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
17. 17.🧩 A box has 6 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 30 (c) 11 (d) 35
18. 18.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
19. 19.🧩 Saanvi is 11 years old. Vihaan is 3 years older than Saanvi. How old is Vihaan? (a) not enough info (b) 14 (c) 15 (d) 3
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
22. 22.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
23. 23.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
24. 24.🧩 Arjun is 6 years old. Diya is older than Arjun. How old is Diya? (a) not enough info (b) 8 (c) 11 (d) 7
25. 25.🧩 Kabir bought 3 notebooks and a lunch box for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹97 (b) ₹33 (c) not enough info (d) ₹100
26. 26.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
27. 27.📊 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
28. 28.🧩 Rohan bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹25 (c) ₹40 (d) ₹20
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
30. 30.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
31. 31.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) 80 (c) 16 (d) not enough info
32. 32.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 32 (b) 24 (c) 11 (d) not enough info
33. 33.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
34. 34.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
35. 35.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
36. 36.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
37. 37.🧩 Saanvi is 12 years old. Arjun is 2 years older than Saanvi. How old is Arjun? (a) 15 (b) 2 (c) not enough info (d) 14
38. 38.🧩 A box has 4 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 30 (b) 10 (c) 24 (d) not enough info
39. 39.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 20 (c) 9 (d) 24
40. 40.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 6 PM (c) 5 PM (d) not enough info

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