Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 211 · 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.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
2. 2.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
4. 4.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
5. 5.🧩 Diya is 9 years old. Kabir is 3 years older than Diya. How old is Kabir? (a) not enough info (b) 12 (c) 3 (d) 13
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
7. 7.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 18 (b) not enough info (c) 9 (d) 24
8. 8.🧩 Meera bought 4 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹10 (c) ₹40 (d) not enough info
9. 9.🧩 Vihaan is 11 years old. Arjun is older than Vihaan. How old is Arjun? (a) 12 (b) 16 (c) 13 (d) not enough info
10. 10.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 3 PM
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.🧩 Vihaan is 8 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) 13 (b) 9 (c) not enough info (d) 10
13. 13.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
14. 14.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
15. 15.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
16. 16.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
18. 18.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Vihaan bought 5 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹50
20. 20.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) the colour of ink (d) your handwriting
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
22. 22.🧩 A box has 8 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 72 (b) not enough info (c) 17 (d) 81
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Nisha bought 2 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹80 (c) ₹45 (d) ₹40
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.🧩 Ananya is 9 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 14 (b) 11 (c) 10 (d) not enough info
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Tara is 10 years old. Diya is 7 years older than Tara. How old is Diya? (a) 17 (b) 7 (c) not enough info (d) 18
29. 29.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
30. 30.🧩 Meera bought 5 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹100
31. 31.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 8 (d) 80
32. 32.🧩 Rohan is 12 years old. Ananya is older than Rohan. How old is Ananya? (a) 13 (b) 14 (c) 17 (d) not enough info
33. 33.🧩 Ishaan is 8 years old. Diya is older than Ishaan. How old is Diya? (a) 13 (b) not enough info (c) 10 (d) 9
34. 34.🧩 Meera bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹240 (b) ₹60 (c) ₹65 (d) not enough info
35. 35.🧩 Aarav bought 3 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹15 (c) ₹10 (d) not enough info
36. 36.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
37. 37.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
38. 38.🧩 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
39. 39.🧩 Meera bought 5 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) ₹150 (c) ₹30 (d) not enough info
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False

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