Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 942 · 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.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
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not 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.🧩 A box has 5 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 10 (b) 25 (c) 30 (d) not enough info
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Tara is 11 years old. Arjun is 9 years older than Tara. How old is Arjun? (a) not enough info (b) 9 (c) 20 (d) 21
9. 9.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
10. 10.🧩 Saanvi is 9 years old. Ananya is older than Saanvi. How old is Ananya? (a) not enough info (b) 10 (c) 11 (d) 14
11. 11.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
12. 12.🧩 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
13. 13.🧩 Vihaan is 8 years old. Diya is older than Vihaan. How old is Diya? (a) not enough info (b) 10 (c) 13 (d) 9
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Meera bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹90
16. 16.🧩 A box has 3 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 28 (b) not enough info (c) 21 (d) 10
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
18. 18.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
19. 19.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
20. 20.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
21. 21.🧩 Vihaan is 9 years old. Aarav is older than Vihaan. How old is Aarav? (a) 11 (b) 10 (c) not enough info (d) 14
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Rohan bought 5 markers for ₹225 in all. Each marker cost the same. What did one marker cost? (a) ₹225 (b) not enough info (c) ₹50 (d) ₹45
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
25. 25.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
26. 26.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 8 (b) 80 (c) 16 (d) not enough info
27. 27.🧩 Ananya is 6 years old. Aarav is older than Ananya. How old is Aarav? (a) 8 (b) 7 (c) 11 (d) not enough info
28. 28.🧩 Vihaan is 8 years old. Saanvi is 7 years older than Vihaan. How old is Saanvi? (a) 16 (b) 7 (c) not enough info (d) 15
29. 29.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 6 PM (c) 9 PM (d) not enough info
30. 30.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) no, check more (d) yes, it is certain
31. 31.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
32. 32.🧩 Kabir is 10 years old. Aarav is older than Kabir. How old is Aarav? (a) 12 (b) 11 (c) not enough info (d) 15
33. 33.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 28 (b) not enough info (c) 24 (d) 10
35. 35.🧩 Saanvi is 12 years old. Rohan is older than Saanvi. How old is Rohan? (a) not enough info (b) 17 (c) 14 (d) 13
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Diya bought 4 balls and a lunch box for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹140 (b) ₹35 (c) not enough info (d) ₹136
39. 39.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
40. 40.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 3 PM (d) 6 PM

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