Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 91 · 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 checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (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.” does not give enough evidence. (a) True (b) False
4. 4.🧩 Nisha bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹70 (c) not enough info (d) ₹35
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
6. 6.🧩 Tara bought 2 notebooks and a cap for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹128 (c) ₹65 (d) ₹130
7. 7.🧩 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
8. 8.🧩 Saanvi is 11 years old. Meera is older than Saanvi. How old is Meera? (a) 13 (b) not enough info (c) 16 (d) 12
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.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
12. 12.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
13. 13.🧩 Arjun bought 3 pens and a water bottle for ₹155 in all. Each pen cost the same. What did one pen cost? (a) ₹51 (b) ₹152 (c) ₹155 (d) not enough info
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
15. 15.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
18. 18.🧩 Ishaan bought 4 markers and a lunch box for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹67 (b) ₹266 (c) not enough info (d) ₹270
19. 19.🧩 Kabir is 9 years old. Diya is older than Kabir. How old is Diya? (a) 14 (b) not enough info (c) 10 (d) 11
20. 20.🧩 A box has 7 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 32 (c) 28 (d) 11
21. 21.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
22. 22.🧩 A box has 8 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 81 (b) not enough info (c) 17 (d) 72
23. 23.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
24. 24.🧩 Ananya bought 6 mangoes for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹300 (b) ₹55 (c) not enough info (d) ₹50
25. 25.🧩 Kabir bought 2 balls and a bag for ₹190 in all. Each ball cost the same. What did one ball cost? (a) ₹190 (b) not enough info (c) ₹95 (d) ₹188
26. 26.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 5 PM
28. 28.🧩 Kabir is 8 years old. Rohan is older than Kabir. How old is Rohan? (a) 13 (b) 9 (c) not enough info (d) 10
29. 29.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
30. 30.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) 7 PM (d) not enough info
31. 31.🧩 Rohan bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹55 (d) ₹110
32. 32.🧩 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
33. 33.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
34. 34.🧩 Tara is 6 years old. Ishaan is older than Tara. How old is Ishaan? (a) 8 (b) not enough info (c) 11 (d) 7
35. 35.🧩 Vihaan bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) not enough info (c) ₹40 (d) ₹20
36. 36.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
37. 37.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
38. 38.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
39. 39.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
40. 40.🧩 Nisha bought 4 pens for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹160

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