Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 16 · 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.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
2. 2.🧩 Saanvi is 12 years old. Nisha is 2 years older than Saanvi. How old is Nisha? (a) 2 (b) 14 (c) 15 (d) not enough info
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
5. 5.📊 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
6. 6.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 2 PM (c) 5 PM (d) not enough info
7. 7.🧩 A box has 5 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 30 (c) 10 (d) 25
8. 8.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Ananya is 10 years old. Nisha is older than Ananya. How old is Nisha? (a) 12 (b) not enough info (c) 11 (d) 15
12. 12.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
14. 14.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
15. 15.🧩 Diya bought 2 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹25 (d) ₹20
16. 16.🧩 Rohan is 9 years old. Tara is older than Rohan. How old is Tara? (a) not enough info (b) 10 (c) 14 (d) 11
17. 17.🧩 A box has 8 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 15 (b) 63 (c) not enough info (d) 56
18. 18.🧩 Ishaan bought 6 pens and a bag for ₹270 in all. Each pen cost the same. What did one pen cost? (a) ₹270 (b) not enough info (c) ₹45 (d) ₹264
19. 19.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
20. 20.🧩 Meera bought 6 pens and a bag for ₹110 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹104 (c) ₹18 (d) ₹110
21. 21.🧩 Aarav is 8 years old. Tara is 9 years older than Aarav. How old is Tara? (a) 18 (b) 9 (c) 17 (d) not enough info
22. 22.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
23. 23.🧩 Kabir is 10 years old. Arjun is older than Kabir. How old is Arjun? (a) 15 (b) 12 (c) 11 (d) not enough info
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Meera is 11 years old. Rohan is 5 years older than Meera. How old is Rohan? (a) 5 (b) 16 (c) not enough info (d) 17
26. 26.🧩 Ishaan bought 4 mangoes and a cap for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹136 (b) not enough info (c) ₹35 (d) ₹140
27. 27.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Ishaan is 9 years old. Rohan is older than Ishaan. How old is Rohan? (a) not enough info (b) 11 (c) 14 (d) 10
30. 30.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) 4 (c) not enough info (d) 40
31. 31.🧩 Kabir bought 2 kites and a water bottle for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹108 (b) not enough info (c) ₹55 (d) ₹110
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
33. 33.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 6 PM
34. 34.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
35. 35.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
36. 36.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
37. 37.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 7 PM
38. 38.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
39. 39.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
40. 40.🧩 Arjun bought 6 balls and a bag for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹18 (b) ₹104 (c) not enough info (d) ₹110

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