Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 367 · 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.🧩 Tara is 9 years old. Nisha is 3 years older than Tara. How old is Nisha? (a) 3 (b) 13 (c) not enough info (d) 12
2. 2.🧩 Saanvi bought 5 pens for ₹225 in all. Each pen cost the same. What did one pen cost? (a) ₹225 (b) ₹50 (c) ₹45 (d) not enough info
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Vihaan bought 5 markers and a cap for ₹335 in all. Each marker cost the same. What did one marker cost? (a) ₹330 (b) ₹335 (c) not enough info (d) ₹67
5. 5.🧩 Arjun bought 2 mangoes for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹70 (b) ₹40 (c) not enough info (d) ₹35
6. 6.🧩 A box has 3 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 8 (b) 20 (c) not enough info (d) 15
7. 7.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
8. 8.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 32 (d) 36
9. 9.🧩 Ananya is 7 years old. Kabir is 2 years older than Ananya. How old is Kabir? (a) 9 (b) 10 (c) not enough info (d) 2
10. 10.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 13 (b) 48 (c) 42 (d) not enough info
11. 11.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
12. 12.🧩 Ishaan is 8 years old. Rohan is 3 years older than Ishaan. How old is Rohan? (a) 12 (b) 3 (c) not enough info (d) 11
13. 13.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) 4 PM (d) not enough info
14. 14.🧩 Diya is 10 years old. Kabir is older than Diya. How old is Kabir? (a) not enough info (b) 12 (c) 15 (d) 11
15. 15.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
16. 16.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 7 PM
17. 17.🧩 Kabir bought 3 balls for ₹105 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) ₹35 (c) ₹105 (d) not enough info
18. 18.🧩 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
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Tara bought 3 kites for ₹165 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹165 (c) ₹60 (d) ₹55
22. 22.🧩 Vihaan bought 5 markers and a water bottle for ₹205 in all. Each marker cost the same. What did one marker cost? (a) ₹41 (b) ₹200 (c) not enough info (d) ₹205
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
24. 24.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 2 PM (c) 4 PM (d) 3 PM
25. 25.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
26. 26.🧩 Aarav bought 4 kites and a bag for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹236 (b) ₹60 (c) not enough info (d) ₹240
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
28. 28.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 10 PM (d) 6 PM
29. 29.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 11 (b) 28 (c) not enough info (d) 35
30. 30.🧩 A box has 6 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 12 (b) 36 (c) not enough info (d) 42
31. 31.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
33. 33.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 8 PM (d) 7 PM
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Vihaan is 10 years old. Diya is older than Vihaan. How old is Diya? (a) 12 (b) 15 (c) not enough info (d) 11
36. 36.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
37. 37.🧩 Diya is 10 years old. Nisha is older than Diya. How old is Nisha? (a) 11 (b) not enough info (c) 15 (d) 12
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Arjun bought 6 markers for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹40 (b) ₹240 (c) ₹45 (d) not enough info
40. 40.🥭 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) yes, mangoes match (c) no, check more (d) no mango is sweet

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