Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 963 · 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.🧩 Aarav bought 4 markers for ₹160 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹40 (c) ₹45 (d) ₹160
2. 2.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 16 (b) 20 (c) not enough info (d) 8
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
6. 6.🧩 Meera is 12 years old. Tara is 6 years older than Meera. How old is Tara? (a) 6 (b) 18 (c) 19 (d) not enough info
7. 7.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
8. 8.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 4 PM
9. 9.🧩 Diya bought 6 pens for ₹210 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹35 (c) ₹210 (d) ₹40
10. 10.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
11. 11.🧩 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
12. 12.🧩 Aarav bought 3 mangoes and a water bottle for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹137 (b) ₹140 (c) ₹46 (d) not enough info
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
14. 14.🧩 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
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, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
17. 17.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
18. 18.🧩 Aarav is 12 years old. Tara is 2 years older than Aarav. How old is Tara? (a) not enough info (b) 2 (c) 14 (d) 15
19. 19.🧩 Saanvi is 9 years old. Kabir is 8 years older than Saanvi. How old is Kabir? (a) 17 (b) not enough info (c) 8 (d) 18
20. 20.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Saanvi bought 4 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹10 (c) ₹15 (d) ₹40
23. 23.🧩 Vihaan bought 6 mangoes and a bag for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹234 (b) not enough info (c) ₹40 (d) ₹240
24. 24.🧩 Rohan bought 5 balls and a lunch box for ₹255 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹51 (c) ₹255 (d) ₹250
25. 25.🧩 Arjun bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) ₹50 (c) ₹55 (d) not enough info
26. 26.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
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.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
29. 29.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 6 PM
30. 30.🧩 Kabir is 6 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 8 (b) 7 (c) not enough info (d) 11
31. 31.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Tara bought 6 pens and a bag for ₹290 in all. Each pen cost the same. What did one pen cost? (a) ₹290 (b) ₹284 (c) not enough info (d) ₹48
34. 34.🧩 Vihaan is 10 years old. Saanvi is 5 years older than Vihaan. How old is Saanvi? (a) 5 (b) not enough info (c) 16 (d) 15
35. 35.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
36. 36.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
37. 37.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Arjun bought 4 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹60
39. 39.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
40. 40.🧩 Aarav bought 6 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹120 (c) ₹20 (d) not enough info

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