Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 143 · 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.” does not give enough evidence. (a) True (b) False
2. 2.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
3. 3.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 13 (b) not enough info (c) 49 (d) 42
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) 42 (b) not enough info (c) 48 (d) 13
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Diya bought 5 notebooks for ₹275 in all. Each notebook cost the same. What did one notebook cost? (a) ₹275 (b) not enough info (c) ₹60 (d) ₹55
10. 10.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 9 PM
11. 11.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 4 PM
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
13. 13.🧩 Saanvi bought 2 pens and a bag for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹88 (b) not enough info (c) ₹90 (d) ₹45
14. 14.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
15. 15.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
16. 16.🧩 A box has 3 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 12 (b) 7 (c) 16 (d) not enough info
17. 17.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
18. 18.🥭 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) yes, it is certain (c) no mango is sweet (d) no, check more
19. 19.🧩 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
20. 20.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
21. 21.🧩 A box has 4 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 24 (b) 10 (c) 30 (d) not enough info
22. 22.🧩 Rohan bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹10 (c) not enough info (d) ₹15
23. 23.🧩 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
24. 24.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
25. 25.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 60 (d) 6
26. 26.🧩 Nisha bought 3 kites and a bag for ₹225 in all. Each kite cost the same. What did one kite cost? (a) ₹222 (b) not enough info (c) ₹75 (d) ₹225
27. 27.🧩 Kabir is 8 years old. Meera is older than Kabir. How old is Meera? (a) 10 (b) 9 (c) 13 (d) not enough info
28. 28.🧩 Ishaan bought 5 markers and a water bottle for ₹340 in all. Each marker cost the same. What did one marker cost? (a) ₹68 (b) not enough info (c) ₹340 (d) ₹335
29. 29.🧩 Diya bought 2 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) not enough info (c) ₹45 (d) ₹50
30. 30.🧩 Nisha is 7 years old. Kabir is 3 years older than Nisha. How old is Kabir? (a) 11 (b) 10 (c) not enough info (d) 3
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
32. 32.🧩 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
33. 33.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
34. 34.🧩 A box has 3 rows of eggs, with 9 in each row. How many eggs are in the box? (a) not enough info (b) 12 (c) 36 (d) 27
35. 35.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
36. 36.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
37. 37.🧩 A box has 4 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 30 (b) not enough info (c) 10 (d) 24
38. 38.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 24 (b) not enough info (c) 9 (d) 20
40. 40.🧩 Kabir bought 6 pens for ₹360 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹360 (c) not enough info (d) ₹60

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