Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 405 · 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.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
2. 2.🧩 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
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
4. 4.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) the colour of ink (d) your handwriting
5. 5.🧩 Saanvi is 8 years old. Nisha is 8 years older than Saanvi. How old is Nisha? (a) 17 (b) 16 (c) not enough info (d) 8
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
8. 8.🧩 A box has 3 rows of apples, with 8 in each row. How many apples are in the box? (a) 11 (b) 32 (c) not enough info (d) 24
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
11. 11.🧩 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
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Vihaan bought 4 pens and a cap for ₹160 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹156 (c) ₹40 (d) ₹160
14. 14.🧩 Kabir bought 3 markers for ₹75 in all. Each marker cost the same. What did one marker cost? (a) ₹75 (b) not enough info (c) ₹30 (d) ₹25
15. 15.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) not enough info (b) 60 (c) 6 (d) 12
16. 16.🧩 A box has 4 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 24 (b) 30 (c) not enough info (d) 10
17. 17.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 56 (b) 14 (c) not enough info (d) 49
18. 18.🧩 Kabir bought 3 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹55 (c) ₹150 (d) not enough info
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
20. 20.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
21. 21.🧩 Diya is 11 years old. Aarav is 2 years older than Diya. How old is Aarav? (a) 14 (b) 13 (c) not enough info (d) 2
22. 22.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
23. 23.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
24. 24.🧩 Rohan bought 3 markers and a bag for ₹160 in all. Each marker cost the same. What did one marker cost? (a) ₹160 (b) ₹157 (c) not enough info (d) ₹53
25. 25.🧩 Arjun bought 2 notebooks and a water bottle for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) ₹170 (b) ₹168 (c) not enough info (d) ₹85
26. 26.🧩 Nisha is 7 years old. Ishaan is older than Nisha. How old is Ishaan? (a) 8 (b) 9 (c) not enough info (d) 12
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
28. 28.🧩 Rohan bought 4 kites for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) not enough info (c) ₹40 (d) ₹35
29. 29.🧩 Ananya bought 5 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹150 (d) ₹35
30. 30.🧩 Arjun is 6 years old. Vihaan is older than Arjun. How old is Vihaan? (a) not enough info (b) 7 (c) 8 (d) 11
31. 31.🧩 Vihaan is 9 years old. Meera is 2 years older than Vihaan. How old is Meera? (a) not enough info (b) 2 (c) 12 (d) 11
32. 32.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 14 (c) 7 (d) 70
33. 33.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
34. 34.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
35. 35.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
37. 37.🧩 Meera is 7 years old. Saanvi is 4 years older than Meera. How old is Saanvi? (a) 4 (b) 12 (c) not enough info (d) 11
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
39. 39.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet

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