Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 668 · 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.🧩 Ishaan is 10 years old. Nisha is older than Ishaan. How old is Nisha? (a) 12 (b) 11 (c) 15 (d) not enough info
2. 2.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
3. 3.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Saanvi bought 2 balls for ₹20 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹10
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
9. 9.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
10. 10.🧩 Kabir is 10 years old. Nisha is older than Kabir. How old is Nisha? (a) 15 (b) not enough info (c) 11 (d) 12
11. 11.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
12. 12.🧩 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
13. 13.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
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
15. 15.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 13 (b) 45 (c) not enough info (d) 36
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Ananya is 7 years old. Aarav is 7 years older than Ananya. How old is Aarav? (a) 14 (b) 7 (c) not enough info (d) 15
20. 20.🧩 A box has 7 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 32 (b) not enough info (c) 11 (d) 28
21. 21.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
22. 22.🧩 Rohan is 11 years old. Kabir is older than Rohan. How old is Kabir? (a) 16 (b) 12 (c) not enough info (d) 13
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
24. 24.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
27. 27.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
28. 28.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
29. 29.🧩 Kabir bought 3 balls and a water bottle for ₹135 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹135 (c) not enough info (d) ₹132
30. 30.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) not enough info (b) 14 (c) 56 (d) 49
31. 31.🧩 Tara bought 4 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹100 (c) ₹25 (d) ₹30
32. 32.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
33. 33.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 90 (c) 9 (d) 18
34. 34.🧩 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
35. 35.🧩 Ananya is 12 years old. Saanvi is 3 years older than Ananya. How old is Saanvi? (a) 15 (b) 3 (c) 16 (d) not enough info
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
38. 38.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
39. 39.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
40. 40.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) 13 (c) not enough info (d) 42

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