Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 633 · 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.🧩 Rohan is 10 years old. Tara is older than Rohan. How old is Tara? (a) 11 (b) 12 (c) 15 (d) not enough info
2. 2.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
3. 3.🧩 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
4. 4.🧩 Meera is 10 years old. Ishaan is older than Meera. How old is Ishaan? (a) 11 (b) 12 (c) not enough info (d) 15
5. 5.🧩 A box has 5 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 25 (c) not enough info (d) 10
6. 6.🧩 Ananya is 6 years old. Tara is 8 years older than Ananya. How old is Tara? (a) 8 (b) 14 (c) 15 (d) not enough info
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
8. 8.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
9. 9.🧩 Rohan bought 3 kites and a bag for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹270 (b) not enough info (c) ₹90 (d) ₹267
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
11. 11.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
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.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) not enough info (c) 12 (d) 6
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
16. 16.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
17. 17.🥭 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
18. 18.🧩 Diya is 11 years old. Meera is older than Diya. How old is Meera? (a) 12 (b) not enough info (c) 16 (d) 13
19. 19.🧩 Arjun bought 3 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹60
20. 20.🧩 Rohan bought 5 markers for ₹175 in all. Each marker cost the same. What did one marker cost? (a) ₹35 (b) ₹175 (c) not enough info (d) ₹40
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
24. 24.🧩 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
25. 25.🧩 A box has 8 rows of guavas, with 8 in each row. How many guavas are in the box? (a) not enough info (b) 64 (c) 72 (d) 16
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
27. 27.🧩 A box has 8 rows of apples, with 9 in each row. How many apples are in the box? (a) 17 (b) 81 (c) not enough info (d) 72
28. 28.🧩 Nisha is 11 years old. Saanvi is older than Nisha. How old is Saanvi? (a) 12 (b) not enough info (c) 13 (d) 16
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
30. 30.🧩 A box has 7 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 72 (d) 63
31. 31.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
32. 32.🧩 A box has 4 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 32 (b) 12 (c) not enough info (d) 40
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
36. 36.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
37. 37.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 6 (c) not enough info (d) 12
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Tara bought 2 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹50
40. 40.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 2 PM (d) not enough info

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