Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 837 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
2. 2.🧩 A box has 3 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 16 (b) 7 (c) not enough info (d) 12
3. 3.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 9 PM
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
5. 5.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
7. 7.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
8. 8.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
9. 9.🧩 Diya is 12 years old. Ananya is older than Diya. How old is Ananya? (a) 13 (b) not enough info (c) 17 (d) 14
10. 10.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
11. 11.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
12. 12.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 40 (b) 13 (c) not enough info (d) 48
13. 13.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
14. 14.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
15. 15.🧩 Diya bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) ₹25 (c) ₹20 (d) not enough info
16. 16.🥭 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) yes, mangoes match (d) no mango is sweet
17. 17.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
18. 18.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
19. 19.🧩 Meera is 8 years old. Kabir is older than Meera. How old is Kabir? (a) 10 (b) 9 (c) not enough info (d) 13
20. 20.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 9 (b) not enough info (c) 20 (d) 24
21. 21.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
22. 22.🧩 Diya bought 3 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹50 (c) ₹55 (d) ₹150
23. 23.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
24. 24.🧩 Meera is 11 years old. Kabir is older than Meera. How old is Kabir? (a) 13 (b) not enough info (c) 16 (d) 12
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
29. 29.🧩 Arjun bought 2 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹80 (b) not enough info (c) ₹45 (d) ₹40
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
31. 31.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
32. 32.🧩 Arjun is 12 years old. Aarav is 4 years older than Arjun. How old is Aarav? (a) 4 (b) 17 (c) not enough info (d) 16
33. 33.🧩 Vihaan is 10 years old. Aarav is older than Vihaan. How old is Aarav? (a) not enough info (b) 12 (c) 11 (d) 15
34. 34.🧩 Kabir is 12 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 13 (b) 17 (c) 14 (d) not enough info
35. 35.🧩 Ananya is 10 years old. Arjun is older than Ananya. How old is Arjun? (a) 12 (b) 11 (c) not enough info (d) 15
36. 36.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 7 (d) 70
37. 37.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Nisha is 11 years old. Ananya is 9 years older than Nisha. How old is Ananya? (a) 9 (b) not enough info (c) 20 (d) 21
39. 39.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
40. 40.🧩 Rohan bought 2 notebooks and a water bottle for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹80 (b) ₹78 (c) ₹40 (d) not enough info

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