Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 218 · 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 checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
3. 3.🧩 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
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
6. 6.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
7. 7.🧩 Vihaan is 8 years old. Ishaan is older than Vihaan. How old is Ishaan? (a) 10 (b) not enough info (c) 13 (d) 9
8. 8.🧩 Vihaan bought 3 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹150
9. 9.🧩 Tara is 10 years old. Meera is 3 years older than Tara. How old is Meera? (a) 3 (b) 14 (c) 13 (d) not enough info
10. 10.🧩 Meera is 8 years old. Ananya is older than Meera. How old is Ananya? (a) 9 (b) 13 (c) 10 (d) not enough info
11. 11.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Ishaan bought 3 markers and a lunch box for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) not enough info (c) ₹117 (d) ₹40
13. 13.🧩 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
14. 14.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
15. 15.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
16. 16.🧩 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
17. 17.🧩 Arjun is 9 years old. Ishaan is older than Arjun. How old is Ishaan? (a) 11 (b) 10 (c) 14 (d) not enough info
18. 18.🧩 Nisha is 11 years old. Rohan is 3 years older than Nisha. How old is Rohan? (a) 15 (b) 14 (c) not enough info (d) 3
19. 19.🧩 Kabir bought 4 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹20 (c) ₹80 (d) not enough info
20. 20.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
21. 21.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
22. 22.🥭 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
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
24. 24.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
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: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
28. 28.🧩 Diya bought 3 pens and a water bottle for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹200 (b) ₹66 (c) not enough info (d) ₹197
29. 29.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
30. 30.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
31. 31.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
32. 32.🧩 Vihaan is 8 years old. Nisha is older than Vihaan. How old is Nisha? (a) not enough info (b) 9 (c) 13 (d) 10
33. 33.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
34. 34.🧩 Aarav bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹175 (d) ₹35
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
37. 37.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
38. 38.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 8 (b) not enough info (c) 80 (d) 16
39. 39.🧩 Arjun bought 5 kites and a bag for ₹355 in all. Each kite cost the same. What did one kite cost? (a) ₹355 (b) ₹71 (c) ₹350 (d) not enough info
40. 40.🧩 Diya is 7 years old. Tara is 9 years older than Diya. How old is Tara? (a) 17 (b) 16 (c) 9 (d) not enough info

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