Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 47 · 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 10 years old. Saanvi is older than Tara. How old is Saanvi? (a) 11 (b) 12 (c) not enough info (d) 15
2. 2.📊 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
3. 3.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
4. 4.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
5. 5.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
6. 6.🧩 Nisha bought 4 markers and a water bottle for ₹250 in all. Each marker cost the same. What did one marker cost? (a) ₹250 (b) ₹246 (c) ₹62 (d) not enough info
7. 7.🧩 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
8. 8.🧩 Ananya bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹60 (c) not enough info (d) ₹15
9. 9.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 5 PM
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
11. 11.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
13. 13.🧩 Ishaan is 11 years old. Saanvi is 7 years older than Ishaan. How old is Saanvi? (a) not enough info (b) 18 (c) 19 (d) 7
14. 14.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 20 (c) 8 (d) 16
15. 15.🧩 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
16. 16.🧩 A box has 7 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 72 (b) not enough info (c) 16 (d) 63
17. 17.🧩 Meera is 11 years old. Rohan is 7 years older than Meera. How old is Rohan? (a) 19 (b) 18 (c) not enough info (d) 7
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
19. 19.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
20. 20.🧩 Rohan is 8 years old. Diya is 9 years older than Rohan. How old is Diya? (a) 17 (b) 9 (c) not enough info (d) 18
21. 21.🧩 Nisha is 12 years old. Rohan is older than Nisha. How old is Rohan? (a) not enough info (b) 17 (c) 13 (d) 14
22. 22.🧩 Nisha bought 2 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹80 (c) ₹40 (d) ₹45
23. 23.🧩 Aarav bought 4 balls and a lunch box for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹96 (b) not enough info (c) ₹100 (d) ₹25
24. 24.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
27. 27.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
28. 28.🧩 Vihaan bought 6 kites and a lunch box for ₹350 in all. Each kite cost the same. What did one kite cost? (a) ₹58 (b) ₹344 (c) not enough info (d) ₹350
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Kabir bought 6 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹120
31. 31.🧩 Kabir bought 4 balls and a cap for ₹190 in all. Each ball cost the same. What did one ball cost? (a) ₹190 (b) ₹47 (c) not enough info (d) ₹186
32. 32.🧩 Meera is 8 years old. Tara is 4 years older than Meera. How old is Tara? (a) 13 (b) 12 (c) not enough info (d) 4
33. 33.🧩 Aarav is 12 years old. Arjun is 6 years older than Aarav. How old is Arjun? (a) 18 (b) 19 (c) not enough info (d) 6
34. 34.🧩 Ishaan bought 5 notebooks and a water bottle for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) ₹360 (b) ₹72 (c) not enough info (d) ₹355
35. 35.🧩 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
36. 36.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
37. 37.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
38. 38.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
40. 40.🧩 Saanvi bought 2 pens for ₹20 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹20

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