Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 274 · 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 is 11 years old. Tara is 3 years older than Kabir. How old is Tara? (a) 3 (b) not enough info (c) 15 (d) 14
2. 2.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
3. 3.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 9 PM
4. 4.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
5. 5.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 12 (b) not enough info (c) 36 (d) 32
6. 6.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
7. 7.🧩 A box has 5 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 11 (b) not enough info (c) 30 (d) 36
8. 8.🧩 Rohan is 9 years old. Ananya is older than Rohan. How old is Ananya? (a) 14 (b) 10 (c) not enough info (d) 11
9. 9.🧩 A box has 8 rows of apples, with 9 in each row. How many apples are in the box? (a) 81 (b) 72 (c) 17 (d) not enough info
10. 10.🧩 Tara is 9 years old. Saanvi is 5 years older than Tara. How old is Saanvi? (a) 15 (b) 5 (c) not enough info (d) 14
11. 11.🧩 Ishaan is 8 years old. Tara is 2 years older than Ishaan. How old is Tara? (a) not enough info (b) 11 (c) 10 (d) 2
12. 12.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
13. 13.🧩 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
14. 14.🧩 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
15. 15.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) yes, mangoes match (d) no, check more
16. 16.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
17. 17.🧩 Kabir bought 5 mangoes for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹300 (b) ₹65 (c) not enough info (d) ₹60
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
19. 19.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
21. 21.🧩 Ishaan is 8 years old. Ananya is older than Ishaan. How old is Ananya? (a) 13 (b) not enough info (c) 10 (d) 9
22. 22.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 9 (c) 24 (d) 20
23. 23.🧩 Saanvi is 11 years old. Kabir is 8 years older than Saanvi. How old is Kabir? (a) 19 (b) 8 (c) not enough info (d) 20
24. 24.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
25. 25.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
26. 26.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 10 (b) 28 (c) not enough info (d) 24
27. 27.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 6 PM (d) 10 PM
28. 28.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
29. 29.🧩 Diya is 11 years old. Rohan is 6 years older than Diya. How old is Rohan? (a) 17 (b) 18 (c) not enough info (d) 6
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Nisha is 7 years old. Diya is older than Nisha. How old is Diya? (a) 8 (b) 9 (c) not enough info (d) 12
32. 32.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
33. 33.🧩 Tara bought 2 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹80 (b) not enough info (c) ₹40 (d) ₹45
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
35. 35.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
36. 36.🧩 Diya is 11 years old. Vihaan is 4 years older than Diya. How old is Vihaan? (a) 4 (b) 16 (c) not enough info (d) 15
37. 37.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 3 PM (d) 5 PM
38. 38.🧩 Ishaan bought 5 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹75
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
40. 40.🧩 Diya bought 6 pens and a bag for ₹400 in all. Each pen cost the same. What did one pen cost? (a) ₹394 (b) not enough info (c) ₹400 (d) ₹66

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