Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 423 · 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) not enough evidence (b) enough evidence
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
3. 3.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
4. 4.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 13 (b) not enough info (c) 45 (d) 36
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Ananya bought 5 notebooks and a bag for ₹205 in all. Each notebook cost the same. What did one notebook cost? (a) ₹41 (b) ₹205 (c) not enough info (d) ₹200
7. 7.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
8. 8.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
9. 9.🧩 Arjun is 7 years old. Ananya is 8 years older than Arjun. How old is Ananya? (a) not enough info (b) 15 (c) 8 (d) 16
10. 10.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
12. 12.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
13. 13.🧩 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
14. 14.🧩 Vihaan is 9 years old. Tara is 8 years older than Vihaan. How old is Tara? (a) 8 (b) 18 (c) 17 (d) not enough info
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
16. 16.🧩 Tara is 8 years old. Diya is older than Tara. How old is Diya? (a) 9 (b) 10 (c) not enough info (d) 13
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
18. 18.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
20. 20.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
21. 21.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 80 (d) 16
22. 22.🧩 Kabir bought 6 markers for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹240 (c) ₹40 (d) not enough info
23. 23.🧩 Arjun bought 3 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹30 (d) ₹10
24. 24.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
25. 25.🧩 Saanvi bought 5 pens and a water bottle for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹115 (b) not enough info (c) ₹24 (d) ₹120
26. 26.🧩 Vihaan is 11 years old. Rohan is 5 years older than Vihaan. How old is Rohan? (a) 5 (b) 17 (c) not enough info (d) 16
27. 27.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
28. 28.🧩 Meera bought 2 balls and a cap for ₹90 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹45 (c) ₹90 (d) ₹88
29. 29.🧩 Vihaan is 12 years old. Saanvi is 5 years older than Vihaan. How old is Saanvi? (a) not enough info (b) 18 (c) 5 (d) 17
30. 30.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
31. 31.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
32. 32.🧩 Saanvi is 7 years old. Aarav is older than Saanvi. How old is Aarav? (a) 12 (b) 9 (c) not enough info (d) 8
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
34. 34.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
35. 35.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
36. 36.🧩 Vihaan is 10 years old. Kabir is 3 years older than Vihaan. How old is Kabir? (a) 13 (b) 3 (c) not enough info (d) 14
37. 37.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
38. 38.🧩 Nisha bought 3 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹60 (d) ₹180
39. 39.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
40. 40.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True

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