Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 957 · 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.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 42 (b) not enough info (c) 48 (d) 13
2. 2.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
4. 4.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
5. 5.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
6. 6.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
7. 7.🧩 Arjun is 10 years old. Vihaan is 2 years older than Arjun. How old is Vihaan? (a) 13 (b) not enough info (c) 2 (d) 12
8. 8.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
9. 9.🧩 Ananya is 7 years old. Ishaan is 5 years older than Ananya. How old is Ishaan? (a) 12 (b) not enough info (c) 5 (d) 13
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
11. 11.🧩 A box has 8 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 72 (b) not enough info (c) 17 (d) 81
12. 12.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” 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.🧩 Diya is 8 years old. Kabir is 9 years older than Diya. How old is Kabir? (a) not enough info (b) 18 (c) 9 (d) 17
16. 16.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 5 (c) not enough info (d) 50
17. 17.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 16 (c) 12 (d) 7
18. 18.🧩 A box has 8 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 15 (b) 63 (c) 56 (d) not enough info
19. 19.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Meera bought 3 kites and a cap for ₹95 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹95 (c) ₹92 (d) ₹31
22. 22.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
23. 23.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
24. 24.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
25. 25.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Vihaan bought 4 mangoes and a bag for ₹260 in all. Each mango cost the same. What did one mango cost? (a) ₹260 (b) ₹65 (c) ₹256 (d) not enough info
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
28. 28.🧩 Tara is 7 years old. Meera is 6 years older than Tara. How old is Meera? (a) 13 (b) 14 (c) 6 (d) not enough info
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
30. 30.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
32. 32.🧩 Arjun bought 6 balls for ₹330 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹60 (c) ₹330 (d) not enough info
33. 33.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 8 PM
34. 34.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
35. 35.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
36. 36.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
37. 37.🧩 Nisha bought 3 notebooks and a lunch box for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹107 (b) not enough info (c) ₹36 (d) ₹110
38. 38.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 11 (c) 36 (d) 30
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
40. 40.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 70 (c) not enough info (d) 7

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