Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 818 · 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 tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Ishaan bought 2 pens and a bag for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹75 (b) ₹150 (c) not enough info (d) ₹148
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
5. 5.🧩 Nisha is 11 years old. Kabir is older than Nisha. How old is Kabir? (a) 12 (b) 13 (c) 16 (d) not enough info
6. 6.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
7. 7.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
8. 8.🧩 Nisha is 10 years old. Tara is older than Nisha. How old is Tara? (a) 15 (b) not enough info (c) 11 (d) 12
9. 9.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 4 PM (c) 8 PM (d) not enough info
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
13. 13.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 5 (d) 50
14. 14.🧩 Ananya bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) not enough info (c) ₹35 (d) ₹30
15. 15.🧩 Ishaan bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹80 (c) ₹40 (d) not enough info
16. 16.🧩 Saanvi is 7 years old. Diya is older than Saanvi. How old is Diya? (a) 8 (b) 9 (c) not enough info (d) 12
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Aarav is 12 years old. Meera is older than Aarav. How old is Meera? (a) 13 (b) 17 (c) not enough info (d) 14
19. 19.🧩 Meera bought 4 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹240 (b) ₹65 (c) not enough info (d) ₹60
20. 20.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
21. 21.🧩 Meera is 6 years old. Arjun is 5 years older than Meera. How old is Arjun? (a) not enough info (b) 12 (c) 11 (d) 5
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
23. 23.🥭 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 mango is sweet (c) no, check more (d) yes, mangoes match
24. 24.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) 7 PM (d) not enough info
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
26. 26.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
28. 28.🧩 Ananya bought 3 kites and a lunch box for ₹170 in all. Each kite cost the same. What did one kite cost? (a) ₹170 (b) ₹56 (c) ₹167 (d) not enough info
29. 29.🧩 Diya is 8 years old. Kabir is 6 years older than Diya. How old is Kabir? (a) not enough info (b) 15 (c) 6 (d) 14
30. 30.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
33. 33.🧩 Tara is 6 years old. Aarav is older than Tara. How old is Aarav? (a) not enough info (b) 7 (c) 11 (d) 8
34. 34.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
35. 35.🧩 Kabir bought 4 mangoes and a cap for ₹200 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹200 (c) ₹50 (d) ₹196
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
37. 37.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Nisha is 12 years old. Meera is older than Nisha. How old is Meera? (a) not enough info (b) 17 (c) 14 (d) 13
40. 40.🧩 Nisha is 8 years old. Ananya is older than Nisha. How old is Ananya? (a) 10 (b) 13 (c) not enough info (d) 9

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