Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 555 · 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.🧩 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
2. 2.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 2 PM
3. 3.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
4. 4.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
5. 5.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
6. 6.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
10. 10.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 7 PM (c) 3 PM (d) not enough info
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
12. 12.🧩 Diya is 11 years old. Ananya is older than Diya. How old is Ananya? (a) 16 (b) 12 (c) 13 (d) not enough info
13. 13.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
14. 14.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
15. 15.🧩 Diya is 7 years old. Arjun is 2 years older than Diya. How old is Arjun? (a) 2 (b) not enough info (c) 10 (d) 9
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
17. 17.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
18. 18.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) 14 (b) 49 (c) not enough info (d) 56
19. 19.🧩 Rohan bought 5 pens for ₹125 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹125 (c) ₹25 (d) not enough info
20. 20.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
21. 21.🧩 Meera is 7 years old. Tara is 5 years older than Meera. How old is Tara? (a) 13 (b) 5 (c) not enough info (d) 12
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
24. 24.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
25. 25.🧩 Rohan bought 3 mangoes for ₹45 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹45 (c) ₹20 (d) ₹15
26. 26.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) 4 PM (d) not enough info
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
29. 29.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
30. 30.🧩 Arjun bought 2 mangoes and a water bottle for ₹190 in all. Each mango cost the same. What did one mango cost? (a) ₹95 (b) not enough info (c) ₹188 (d) ₹190
31. 31.🧩 Kabir bought 6 notebooks and a water bottle for ₹330 in all. Each notebook cost the same. What did one notebook cost? (a) ₹324 (b) ₹55 (c) not enough info (d) ₹330
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
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) no, check more (c) no mango is sweet (d) yes, mangoes match
34. 34.🧩 A box has 7 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 32 (b) 11 (c) 28 (d) not enough info
35. 35.🧩 Ishaan is 8 years old. Nisha is 8 years older than Ishaan. How old is Nisha? (a) 8 (b) not enough info (c) 17 (d) 16
36. 36.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
37. 37.🧩 Aarav is 10 years old. Meera is older than Aarav. How old is Meera? (a) 12 (b) not enough info (c) 11 (d) 15
38. 38.🧩 Aarav is 7 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 8 (b) not enough info (c) 9 (d) 12
39. 39.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 9 (b) 20 (c) not enough info (d) 24
40. 40.🧩 Kabir bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹55 (c) not enough info (d) ₹150

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