Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 137 · 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 tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
2. 2.📊 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
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) not enough info (c) 13 (d) 42
5. 5.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
6. 6.🧩 Aarav is 7 years old. Saanvi is older than Aarav. How old is Saanvi? (a) 9 (b) not enough info (c) 12 (d) 8
7. 7.🧩 Rohan bought 5 pens and a water bottle for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹14 (b) not enough info (c) ₹70 (d) ₹65
8. 8.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Arjun bought 5 balls for ₹175 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹40 (c) ₹175 (d) ₹35
10. 10.🧩 Aarav bought 5 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹75 (d) ₹20
11. 11.🧩 Meera is 11 years old. Rohan is 8 years older than Meera. How old is Rohan? (a) 20 (b) 8 (c) 19 (d) not enough info
12. 12.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
13. 13.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
14. 14.🧩 Kabir is 8 years old. Vihaan is 7 years older than Kabir. How old is Vihaan? (a) 16 (b) not enough info (c) 15 (d) 7
15. 15.🧩 A box has 3 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 12 (b) 16 (c) 7 (d) not enough info
16. 16.🧩 Arjun bought 4 kites and a lunch box for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹116 (d) ₹120
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 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
19. 19.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Ishaan is 7 years old. Saanvi is 4 years older than Ishaan. How old is Saanvi? (a) 11 (b) 4 (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.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
24. 24.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
25. 25.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
26. 26.🧩 A box has 5 rows of guavas, with 8 in each row. How many guavas are in the box? (a) not enough info (b) 48 (c) 40 (d) 13
27. 27.🧩 Diya bought 2 balls for ₹70 in all. Each ball cost the same. What did one ball cost? (a) ₹70 (b) ₹40 (c) ₹35 (d) not enough info
28. 28.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
29. 29.🧩 Kabir is 10 years old. Saanvi is older than Kabir. How old is Saanvi? (a) not enough info (b) 15 (c) 11 (d) 12
30. 30.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
32. 32.🧩 Meera is 7 years old. Rohan is older than Meera. How old is Rohan? (a) 12 (b) not enough info (c) 9 (d) 8
33. 33.🧩 Tara bought 5 kites and a cap for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) ₹48 (c) not enough info (d) ₹235
34. 34.🧩 Ishaan is 8 years old. Ananya is 6 years older than Ishaan. How old is Ananya? (a) 15 (b) not enough info (c) 6 (d) 14
35. 35.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
36. 36.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) no mango is sweet (d) yes, mangoes match
37. 37.🧩 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
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
39. 39.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
40. 40.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 8 PM (d) 7 PM

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