Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 591 · 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) True (b) False
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
3. 3.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
7. 7.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
8. 8.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
9. 9.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
11. 11.🧩 Arjun bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) ₹30 (c) not enough info (d) ₹25
12. 12.🧩 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
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
14. 14.🧩 Ishaan bought 3 pens and a cap for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹147 (b) not enough info (c) ₹50 (d) ₹150
15. 15.🧩 Ananya is 6 years old. Nisha is 7 years older than Ananya. How old is Nisha? (a) 7 (b) 13 (c) 14 (d) not enough info
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
17. 17.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
18. 18.🧩 Kabir bought 5 mangoes and a lunch box for ₹320 in all. Each mango cost the same. What did one mango cost? (a) ₹64 (b) ₹320 (c) not enough info (d) ₹315
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Ananya bought 5 pens and a water bottle for ₹330 in all. Each pen cost the same. What did one pen cost? (a) ₹330 (b) ₹325 (c) ₹66 (d) not enough info
21. 21.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 16 (d) 80
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Arjun bought 5 notebooks and a bag for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹24 (b) ₹115 (c) not enough info (d) ₹120
24. 24.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
26. 26.🧩 A box has 3 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 8 (b) 20 (c) not enough info (d) 15
27. 27.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Meera bought 5 pens and a cap for ₹145 in all. Each pen cost the same. What did one pen cost? (a) ₹29 (b) ₹145 (c) not enough info (d) ₹140
30. 30.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Ishaan bought 6 pens and a water bottle for ₹390 in all. Each pen cost the same. What did one pen cost? (a) ₹384 (b) ₹390 (c) not enough info (d) ₹65
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Ishaan bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) not enough info (c) ₹35 (d) ₹30
34. 34.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
35. 35.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
36. 36.🧩 Diya is 9 years old. Nisha is 2 years older than Diya. How old is Nisha? (a) 2 (b) 12 (c) not enough info (d) 11
37. 37.🧩 Ananya bought 3 pens for ₹45 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹45 (d) ₹15
38. 38.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 5 PM (d) 8 PM
39. 39.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
40. 40.🧩 Meera is 12 years old. Diya is older than Meera. How old is Diya? (a) 13 (b) 14 (c) 17 (d) not enough info

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