Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 351 · 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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
2. 2.🧩 A box has 4 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 30 (b) 10 (c) not enough info (d) 24
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.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
6. 6.🧩 Saanvi is 8 years old. Ananya is older than Saanvi. How old is Ananya? (a) 9 (b) 10 (c) not enough info (d) 13
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
8. 8.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
9. 9.🧩 Diya is 6 years old. Meera is older than Diya. How old is Meera? (a) 7 (b) not enough info (c) 8 (d) 11
10. 10.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Aarav bought 2 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹35 (c) not enough info (d) ₹60
12. 12.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 49 (c) 14 (d) 56
13. 13.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
15. 15.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
17. 17.🧩 Ananya is 7 years old. Aarav is older than Ananya. How old is Aarav? (a) 8 (b) 12 (c) 9 (d) not enough info
18. 18.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) no, check more (d) yes, mangoes match
19. 19.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
20. 20.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
21. 21.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
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
23. 23.🧩 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
24. 24.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
25. 25.🧩 Diya is 8 years old. Meera is 5 years older than Diya. How old is Meera? (a) not enough info (b) 13 (c) 14 (d) 5
26. 26.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
28. 28.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
29. 29.🧩 A box has 3 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 36 (b) not enough info (c) 12 (d) 27
30. 30.🧩 Saanvi bought 4 notebooks for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹140 (b) ₹40 (c) ₹35 (d) not enough info
31. 31.🧩 Diya bought 5 balls and a lunch box for ₹235 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹235 (c) ₹230 (d) ₹47
32. 32.🧩 Saanvi bought 2 kites and a water bottle for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹58 (b) ₹60 (c) not enough info (d) ₹30
33. 33.🧩 Arjun bought 2 balls for ₹20 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹10
34. 34.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
35. 35.🧩 Vihaan is 12 years old. Kabir is 2 years older than Vihaan. How old is Kabir? (a) 2 (b) not enough info (c) 15 (d) 14
36. 36.🧩 Nisha is 7 years old. Ananya is older than Nisha. How old is Ananya? (a) 8 (b) 9 (c) 12 (d) not enough info
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
38. 38.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
39. 39.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 10 (b) 50 (c) not enough info (d) 5
40. 40.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True

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