Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 777 · 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.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 13 (b) 36 (c) not enough info (d) 45
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
3. 3.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
4. 4.🧩 Tara is 9 years old. Ananya is 4 years older than Tara. How old is Ananya? (a) 14 (b) 13 (c) 4 (d) not enough info
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
8. 8.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
9. 9.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
10. 10.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
11. 11.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
12. 12.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
13. 13.🧩 Meera bought 5 pens and a lunch box for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹210 (b) ₹42 (c) ₹205 (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.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 30 (b) 35 (c) 11 (d) not enough info
16. 16.🧩 Meera bought 6 pens and a lunch box for ₹260 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹43 (c) ₹260 (d) ₹254
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
18. 18.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
21. 21.🧩 A box has 5 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 35 (d) 42
22. 22.🧩 Ishaan bought 4 mangoes and a water bottle for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹116 (c) ₹120 (d) ₹30
23. 23.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
24. 24.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) yes, mangoes match (d) no mango is sweet
25. 25.🧩 Ananya is 12 years old. Nisha is older than Ananya. How old is Nisha? (a) 17 (b) not enough info (c) 13 (d) 14
26. 26.🧩 Kabir bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹40
27. 27.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
29. 29.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
30. 30.🧩 Meera is 6 years old. Diya is 2 years older than Meera. How old is Diya? (a) 2 (b) 9 (c) not enough info (d) 8
31. 31.🧩 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
32. 32.🧩 Tara bought 2 pens for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹70 (b) ₹40 (c) ₹35 (d) not enough info
33. 33.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 6 PM (d) 10 PM
34. 34.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
35. 35.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
36. 36.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
37. 37.🧩 Nisha bought 2 mangoes and a bag for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹68 (b) ₹35 (c) not enough info (d) ₹70
38. 38.🧩 Aarav bought 5 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹35 (c) ₹150 (d) not enough info
39. 39.🧩 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
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True

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