Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 721 · 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.🧩 Kabir bought 5 kites for ₹175 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹40 (c) not enough info (d) ₹175
2. 2.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 2 PM (d) 5 PM
3. 3.🧩 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
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
6. 6.🧩 Rohan is 7 years old. Saanvi is 3 years older than Rohan. How old is Saanvi? (a) not enough info (b) 10 (c) 11 (d) 3
7. 7.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
8. 8.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 70 (c) not enough info (d) 7
9. 9.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 2 PM (c) not enough info (d) 5 PM
10. 10.🧩 A box has 5 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 42 (b) 35 (c) not enough info (d) 12
11. 11.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
12. 12.🧩 A box has 3 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 11 (c) 24 (d) 32
13. 13.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
14. 14.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 20 (c) 8 (d) 16
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
16. 16.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
18. 18.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
19. 19.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 11 (b) not enough info (c) 28 (d) 35
20. 20.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, it is certain (d) yes, mangoes match
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
22. 22.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
23. 23.🧩 Vihaan bought 5 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹300 (c) ₹65 (d) not enough info
24. 24.🧩 A box has 4 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 25 (b) not enough info (c) 9 (d) 20
25. 25.🧩 Ishaan is 8 years old. Meera is older than Ishaan. How old is Meera? (a) 9 (b) 13 (c) not enough info (d) 10
26. 26.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Aarav is 12 years old. Ishaan is 2 years older than Aarav. How old is Ishaan? (a) not enough info (b) 2 (c) 14 (d) 15
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
36. 36.🧩 A box has 8 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 81 (b) not enough info (c) 17 (d) 72
37. 37.🧩 Nisha is 12 years old. Aarav is older than Nisha. How old is Aarav? (a) 17 (b) 13 (c) not enough info (d) 14
38. 38.🧩 A box has 4 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 40 (b) 12 (c) not enough info (d) 32
39. 39.🧩 Saanvi is 7 years old. Ishaan is 6 years older than Saanvi. How old is Ishaan? (a) 13 (b) 6 (c) 14 (d) not enough info
40. 40.🧩 Vihaan is 11 years old. Ananya is 6 years older than Vihaan. How old is Ananya? (a) 18 (b) 17 (c) 6 (d) not enough info

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