Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 320 · 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 measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
3. 3.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
4. 4.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
5. 5.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
6. 6.🧩 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
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
8. 8.🧩 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
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
10. 10.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
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
13. 13.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
14. 14.🧩 Kabir bought 2 notebooks for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹55 (c) not enough info (d) ₹110
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
17. 17.🧩 Ananya is 7 years old. Nisha is 9 years older than Ananya. How old is Nisha? (a) 9 (b) 17 (c) not enough info (d) 16
18. 18.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 9 PM (d) 8 PM
19. 19.🧩 Meera bought 4 mangoes and a bag for ₹300 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹300 (c) ₹296 (d) ₹75
20. 20.🧩 Arjun bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) not enough info (c) ₹60 (d) ₹10
21. 21.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
22. 22.🧩 Diya is 6 years old. Ananya is older than Diya. How old is Ananya? (a) 7 (b) 11 (c) 8 (d) not enough info
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Ananya is 12 years old. Aarav is 6 years older than Ananya. How old is Aarav? (a) 6 (b) 19 (c) not enough info (d) 18
25. 25.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) 72 (b) not enough info (c) 16 (d) 64
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Meera bought 6 kites for ₹360 in all. Each kite cost the same. What did one kite cost? (a) ₹65 (b) not enough info (c) ₹360 (d) ₹60
29. 29.🧩 Nisha bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹50 (c) not enough info (d) ₹25
30. 30.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
31. 31.🥭 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) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
32. 32.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
33. 33.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Ishaan is 11 years old. Aarav is 7 years older than Ishaan. How old is Aarav? (a) 18 (b) not enough info (c) 19 (d) 7
35. 35.🧩 Kabir is 11 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 12 (b) not enough info (c) 16 (d) 13
36. 36.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 30 (c) 35 (d) 11
37. 37.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
39. 39.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
40. 40.📊 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

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