Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 19 · 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.🧩 Nisha is 8 years old. Tara is 5 years older than Nisha. How old is Tara? (a) 5 (b) 13 (c) 14 (d) not enough info
2. 2.🧩 Diya is 8 years old. Nisha is older than Diya. How old is Nisha? (a) 13 (b) not enough info (c) 9 (d) 10
3. 3.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 7 (c) 70 (d) 14
4. 4.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 4 PM
5. 5.🧩 Kabir bought 3 kites and a lunch box for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) ₹177 (c) not enough info (d) ₹60
6. 6.🧩 A box has 4 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 36 (b) 45 (c) not enough info (d) 13
7. 7.🧩 Arjun is 9 years old. Nisha is older than Arjun. How old is Nisha? (a) 10 (b) 11 (c) not enough info (d) 14
8. 8.🧩 Aarav bought 2 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹80 (c) not enough info (d) ₹45
9. 9.🧩 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
10. 10.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
13. 13.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
14. 14.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
15. 15.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
16. 16.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
17. 17.🧩 Kabir bought 4 notebooks and a water bottle for ₹260 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹260 (c) ₹65 (d) ₹256
18. 18.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
21. 21.🥭 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) no, check more (c) yes, it is certain (d) yes, mangoes match
22. 22.🧩 Aarav is 11 years old. Nisha is 7 years older than Aarav. How old is Nisha? (a) 18 (b) 19 (c) 7 (d) not enough info
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Ishaan is 11 years old. Saanvi is older than Ishaan. How old is Saanvi? (a) 13 (b) not enough info (c) 16 (d) 12
25. 25.🧩 A box has 7 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 72 (b) 63 (c) not enough info (d) 16
26. 26.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 5 PM
27. 27.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) not enough info (c) 6 PM (d) 9 PM
28. 28.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Ananya bought 3 pens and a cap for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹197 (b) not enough info (c) ₹200 (d) ₹66
30. 30.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
32. 32.🧩 Meera bought 2 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹90 (b) not enough info (c) ₹45 (d) ₹50
33. 33.🧩 Meera bought 5 pens and a water bottle for ₹150 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹30 (c) ₹150 (d) ₹145
34. 34.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
36. 36.🧩 A box has 8 rows of guavas, with 6 in each row. How many guavas are in the box? (a) not enough info (b) 48 (c) 54 (d) 14
37. 37.🧩 Diya bought 2 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹20
38. 38.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
39. 39.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
40. 40.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info

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