Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 614 · 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.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
3. 3.🧩 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
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Rohan bought 4 kites and a cap for ₹280 in all. Each kite cost the same. What did one kite cost? (a) ₹276 (b) ₹280 (c) not enough info (d) ₹70
7. 7.🧩 Rohan is 6 years old. Arjun is older than Rohan. How old is Arjun? (a) 11 (b) 8 (c) not enough info (d) 7
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Meera bought 6 notebooks and a bag for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) ₹354 (b) ₹360 (c) ₹60 (d) not enough info
10. 10.🧩 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
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
13. 13.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Aarav is 6 years old. Tara is 9 years older than Aarav. How old is Tara? (a) 9 (b) 15 (c) 16 (d) not enough info
17. 17.🧩 Meera bought 2 pens and a water bottle for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹80 (c) not enough info (d) ₹78
18. 18.🧩 Vihaan is 8 years old. Aarav is 7 years older than Vihaan. How old is Aarav? (a) not enough info (b) 7 (c) 15 (d) 16
19. 19.🧩 A box has 6 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 15 (b) 63 (c) not enough info (d) 54
20. 20.🧩 Rohan bought 4 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) not enough info (c) ₹240 (d) ₹65
21. 21.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
22. 22.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
23. 23.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
24. 24.🧩 Diya bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹15 (c) ₹20 (d) ₹90
25. 25.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
26. 26.🧩 A box has 4 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 20 (b) not enough info (c) 9 (d) 25
27. 27.🧩 Nisha bought 4 mangoes and a water bottle for ₹190 in all. Each mango cost the same. What did one mango cost? (a) ₹186 (b) ₹190 (c) not enough info (d) ₹47
28. 28.🧩 Vihaan is 8 years old. Rohan is older than Vihaan. How old is Rohan? (a) 9 (b) 10 (c) 13 (d) not enough info
29. 29.🧩 Arjun bought 6 notebooks for ₹270 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹50 (c) ₹270 (d) ₹45
30. 30.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
31. 31.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 13 (b) 42 (c) not enough info (d) 48
32. 32.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 20 (b) 25 (c) 9 (d) not enough info
33. 33.🥭 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 mango is sweet (d) no, check more
34. 34.🧩 Diya is 6 years old. Meera is older than Diya. How old is Meera? (a) 11 (b) 7 (c) 8 (d) not enough info
35. 35.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 54 (b) not enough info (c) 48 (d) 14
36. 36.🧩 Saanvi is 12 years old. Ananya is 4 years older than Saanvi. How old is Ananya? (a) 17 (b) 4 (c) not enough info (d) 16
37. 37.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
38. 38.🧩 A box has 3 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 10 (c) 28 (d) 21
39. 39.🧩 Vihaan is 10 years old. Ishaan is 2 years older than Vihaan. How old is Ishaan? (a) 2 (b) 13 (c) 12 (d) not enough info
40. 40.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False

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