Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 531 · 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 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 11 (b) 36 (c) not enough info (d) 30
2. 2.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
5. 5.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 11 (b) 24 (c) 32 (d) not enough info
6. 6.🧩 Meera is 9 years old. Aarav is older than Meera. How old is Aarav? (a) 10 (b) 11 (c) not enough info (d) 14
7. 7.🧩 Saanvi bought 4 markers and a water bottle for ₹230 in all. Each marker cost the same. What did one marker cost? (a) ₹57 (b) not enough info (c) ₹226 (d) ₹230
8. 8.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
9. 9.🧩 A box has 3 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 20 (c) 15 (d) 8
10. 10.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
11. 11.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
12. 12.🧩 Vihaan is 9 years old. Tara is older than Vihaan. How old is Tara? (a) 10 (b) 11 (c) 14 (d) not enough info
13. 13.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
14. 14.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
16. 16.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Diya is 11 years old. Arjun is older than Diya. How old is Arjun? (a) 13 (b) 12 (c) 16 (d) not enough info
19. 19.🧩 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
20. 20.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
22. 22.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
23. 23.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
24. 24.🧩 Vihaan bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹20 (c) ₹25 (d) not enough info
25. 25.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
26. 26.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
27. 27.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
28. 28.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 6 PM
29. 29.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) not enough info (b) 9 (c) 18 (d) 90
30. 30.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 8 PM (d) 7 PM
31. 31.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
32. 32.🧩 Ishaan bought 5 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) ₹60 (c) ₹300 (d) not enough info
33. 33.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
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
38. 38.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
39. 39.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
40. 40.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence

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