Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 909 · 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 tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
2. 2.🧩 Kabir bought 2 pens and a lunch box for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹118 (d) ₹60
3. 3.🧩 Kabir is 6 years old. Arjun is older than Kabir. How old is Arjun? (a) not enough info (b) 7 (c) 8 (d) 11
4. 4.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
6. 6.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
7. 7.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
8. 8.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 15 (b) 8 (c) not enough info (d) 20
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Nisha is 12 years old. Vihaan is 5 years older than Nisha. How old is Vihaan? (a) 17 (b) 5 (c) 18 (d) not enough info
11. 11.🧩 Aarav bought 5 markers for ₹75 in all. Each marker cost the same. What did one marker cost? (a) ₹20 (b) ₹15 (c) ₹75 (d) not enough info
12. 12.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
13. 13.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
14. 14.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
15. 15.🧩 Rohan is 11 years old. Ishaan is older than Rohan. How old is Ishaan? (a) 13 (b) not enough info (c) 12 (d) 16
16. 16.🧩 A box has 5 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 30 (b) not enough info (c) 10 (d) 25
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
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.🧩 Ishaan bought 2 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹30 (d) ₹35
21. 21.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
22. 22.🧩 Arjun is 7 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 12 (b) 9 (c) 8 (d) not enough info
23. 23.🧩 A box has 4 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 12 (b) not enough info (c) 32 (d) 40
24. 24.🧩 Tara bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹10 (d) ₹15
25. 25.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
26. 26.🧩 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
27. 27.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
28. 28.🧩 Kabir is 6 years old. Tara is 6 years older than Kabir. How old is Tara? (a) not enough info (b) 6 (c) 13 (d) 12
29. 29.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
30. 30.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
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.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
33. 33.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
34. 34.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) 8 PM (d) not enough info
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.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
37. 37.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
38. 38.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
39. 39.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
40. 40.🧩 A box has 5 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 14 (b) not enough info (c) 54 (d) 45

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