Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 80 · 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.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
3. 3.🧩 Saanvi is 9 years old. Diya is older than Saanvi. How old is Diya? (a) 11 (b) 10 (c) 14 (d) not enough info
4. 4.🧩 Ananya bought 5 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹35 (c) ₹150 (d) ₹30
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
7. 7.🧩 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
8. 8.🧩 Nisha is 6 years old. Vihaan is 9 years older than Nisha. How old is Vihaan? (a) 16 (b) not enough info (c) 9 (d) 15
9. 9.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
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Aarav bought 3 balls and a water bottle for ₹95 in all. Each ball cost the same. What did one ball cost? (a) ₹95 (b) ₹92 (c) ₹31 (d) not enough info
12. 12.🧩 Diya bought 6 pens and a lunch box for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹234 (b) not enough info (c) ₹40 (d) ₹240
13. 13.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
14. 14.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
15. 15.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 7 PM
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Tara bought 3 kites for ₹165 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹60 (c) ₹165 (d) ₹55
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Arjun is 6 years old. Nisha is 8 years older than Arjun. How old is Nisha? (a) not enough info (b) 15 (c) 14 (d) 8
20. 20.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 2 PM (d) not enough info
21. 21.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
22. 22.🧩 Tara is 8 years old. Vihaan is 9 years older than Tara. How old is Vihaan? (a) not enough info (b) 17 (c) 18 (d) 9
23. 23.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
24. 24.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
25. 25.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 36 (b) 12 (c) not enough info (d) 32
26. 26.🧩 Ishaan bought 2 kites and a bag for ₹110 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹110 (c) ₹108 (d) ₹55
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
28. 28.🧩 Ananya is 11 years old. Meera is 5 years older than Ananya. How old is Meera? (a) 5 (b) not enough info (c) 17 (d) 16
29. 29.🧩 Aarav bought 6 mangoes for ₹270 in all. Each mango cost the same. What did one mango cost? (a) ₹270 (b) ₹45 (c) not enough info (d) ₹50
30. 30.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
31. 31.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
32. 32.🧩 Diya is 10 years old. Aarav is 8 years older than Diya. How old is Aarav? (a) not enough info (b) 19 (c) 8 (d) 18
33. 33.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
34. 34.🧩 Ananya is 11 years old. Rohan is older than Ananya. How old is Rohan? (a) 16 (b) 12 (c) 13 (d) not enough info
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
36. 36.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
38. 38.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
39. 39.🧩 Saanvi bought 3 kites and a water bottle for ₹230 in all. Each kite cost the same. What did one kite cost? (a) ₹227 (b) ₹76 (c) not enough info (d) ₹230
40. 40.🧩 Nisha is 12 years old. Diya is older than Nisha. How old is Diya? (a) 14 (b) 17 (c) not enough info (d) 13

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