Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 427 · 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 6 years old. Aarav is 6 years older than Tara. How old is Aarav? (a) 6 (b) 13 (c) not enough info (d) 12
2. 2.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
3. 3.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
4. 4.🧩 Rohan bought 2 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹100 (b) not enough info (c) ₹55 (d) ₹50
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
7. 7.🧩 Arjun bought 2 balls and a bag for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹108 (b) ₹55 (c) ₹110 (d) not enough info
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
9. 9.🧩 Meera bought 2 mangoes and a cap for ₹80 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹80 (c) ₹40 (d) ₹78
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
12. 12.🧩 A box has 8 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 81 (b) 72 (c) not enough info (d) 17
13. 13.🧩 Saanvi bought 3 notebooks and a water bottle for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹147 (b) ₹50 (c) ₹150 (d) not enough info
14. 14.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
15. 15.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
16. 16.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 25 (b) 9 (c) not enough info (d) 20
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
18. 18.🧩 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
19. 19.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
20. 20.🧩 Saanvi bought 3 markers and a cap for ₹210 in all. Each marker cost the same. What did one marker cost? (a) ₹210 (b) ₹70 (c) ₹207 (d) not enough info
21. 21.🧩 Vihaan bought 4 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹180 (b) ₹45 (c) not enough info (d) ₹50
22. 22.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
23. 23.🧩 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
24. 24.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
25. 25.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
26. 26.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
28. 28.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
30. 30.🧩 Kabir bought 6 mangoes and a lunch box for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹200 (b) ₹194 (c) ₹33 (d) not enough info
31. 31.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Arjun bought 5 notebooks and a water bottle for ₹190 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹185 (c) ₹190 (d) ₹38
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
34. 34.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
35. 35.🧩 Tara bought 4 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) ₹30 (c) ₹25 (d) not enough info
36. 36.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 36 (d) 42
37. 37.🧩 Aarav bought 4 balls and a water bottle for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) ₹50 (c) not enough info (d) ₹196
38. 38.🧩 Ishaan is 9 years old. Diya is older than Ishaan. How old is Diya? (a) not enough info (b) 11 (c) 14 (d) 10
39. 39.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
40. 40.🧩 Meera bought 4 pens and a cap for ₹260 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹256 (c) ₹260 (d) not enough info

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