Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 299 · 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 tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
2. 2.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Diya bought 2 markers and a cap for ₹190 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹188 (c) ₹95 (d) ₹190
5. 5.🥭 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, check more (c) yes, mangoes match (d) no mango is sweet
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
7. 7.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
8. 8.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
9. 9.🧩 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
10. 10.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) 8 (c) not enough info (d) 16
11. 11.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
12. 12.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
13. 13.🧩 Kabir bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹55 (d) ₹275
14. 14.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
15. 15.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 32 (b) 12 (c) 36 (d) not enough info
16. 16.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 10 (d) 5
17. 17.🧩 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
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
19. 19.🧩 A box has 7 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 64 (b) not enough info (c) 15 (d) 56
20. 20.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
21. 21.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
22. 22.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
23. 23.🧩 Aarav is 10 years old. Tara is older than Aarav. How old is Tara? (a) 11 (b) 12 (c) 15 (d) not enough info
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
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.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
28. 28.🧩 Kabir is 6 years old. Meera is 5 years older than Kabir. How old is Meera? (a) not enough info (b) 5 (c) 11 (d) 12
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
30. 30.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
32. 32.🧩 Arjun bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) ₹50 (c) not enough info (d) ₹55
33. 33.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
34. 34.🧩 Diya bought 3 mangoes for ₹165 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹60 (c) ₹165 (d) ₹55
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
36. 36.🧩 Diya bought 3 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹90
37. 37.🧩 Kabir bought 6 markers for ₹330 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹55 (c) ₹330 (d) not enough info
38. 38.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
39. 39.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Vihaan bought 2 pens for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹35 (c) not enough info (d) ₹70

Free critical thinking lessons, practice and worksheets at talentjr.in/critical-thinking-for-kids