Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 795 · 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 checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
2. 2.🧩 A box has 5 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) not enough info (b) 36 (c) 30 (d) 11
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
4. 4.🧩 Ananya bought 6 kites and a water bottle for ₹170 in all. Each kite cost the same. What did one kite cost? (a) ₹164 (b) not enough info (c) ₹28 (d) ₹170
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
6. 6.🧩 A box has 5 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 35 (c) 42 (d) 12
7. 7.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
8. 8.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Kabir bought 2 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) not enough info (c) ₹25 (d) ₹50
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
11. 11.🧩 A box has 4 rows of apples, with 8 in each row. How many apples are in the box? (a) 12 (b) 40 (c) not enough info (d) 32
12. 12.🧩 Kabir bought 4 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹15 (d) ₹20
13. 13.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
14. 14.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
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: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
19. 19.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Vihaan is 9 years old. Rohan is older than Vihaan. How old is Rohan? (a) not enough info (b) 14 (c) 11 (d) 10
21. 21.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
22. 22.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
26. 26.🧩 Vihaan bought 6 pens and a lunch box for ₹110 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹104 (c) ₹18 (d) ₹110
27. 27.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
28. 28.🧩 Arjun is 11 years old. Ishaan is older than Arjun. How old is Ishaan? (a) 13 (b) 16 (c) 12 (d) not enough info
29. 29.🧩 Arjun is 11 years old. Vihaan is 7 years older than Arjun. How old is Vihaan? (a) not enough info (b) 7 (c) 18 (d) 19
30. 30.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Ishaan is 8 years old. Arjun is older than Ishaan. How old is Arjun? (a) 13 (b) 9 (c) not enough info (d) 10
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
33. 33.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 20 (b) 24 (c) not enough info (d) 9
34. 34.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) 50 (c) not enough info (d) 5
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
36. 36.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
37. 37.🧩 Saanvi is 7 years old. Diya is 7 years older than Saanvi. How old is Diya? (a) not enough info (b) 14 (c) 7 (d) 15
38. 38.🧩 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
39. 39.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False

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