Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 298 · 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 3 balls for ₹45 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹45
2. 2.🧩 Ananya bought 4 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹200
3. 3.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
6. 6.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
9. 9.🧩 Arjun is 9 years old. Aarav is 2 years older than Arjun. How old is Aarav? (a) not enough info (b) 2 (c) 11 (d) 12
10. 10.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
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.🧩 Rohan bought 4 notebooks and a bag for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹200 (b) not enough info (c) ₹196 (d) ₹50
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give 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.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
17. 17.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
18. 18.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
19. 19.🧩 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
20. 20.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 36 (b) not enough info (c) 11 (d) 30
21. 21.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
22. 22.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
23. 23.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
24. 24.🥭 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) yes, it is certain (c) no, check more (d) yes, mangoes match
25. 25.🧩 Meera bought 4 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹200 (c) ₹55 (d) ₹50
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
27. 27.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 12 (c) 35 (d) 40
28. 28.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
29. 29.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
30. 30.🧩 Ananya bought 6 kites and a bag for ₹260 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹254 (c) ₹43 (d) ₹260
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
33. 33.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
34. 34.🧩 Ananya is 11 years old. Tara is 9 years older than Ananya. How old is Tara? (a) not enough info (b) 21 (c) 9 (d) 20
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
36. 36.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
37. 37.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
38. 38.🧩 Kabir is 7 years old. Meera is older than Kabir. How old is Meera? (a) 12 (b) not enough info (c) 8 (d) 9
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
40. 40.🧩 Kabir is 8 years old. Saanvi is older than Kabir. How old is Saanvi? (a) 13 (b) not enough info (c) 10 (d) 9

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