Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 745 · 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.🧩 Kabir is 8 years old. Meera is older than Kabir. How old is Meera? (a) 10 (b) not enough info (c) 9 (d) 13
2. 2.🧩 Nisha bought 5 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹75 (d) ₹20
3. 3.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
4. 4.🧩 Tara bought 6 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹180 (b) ₹35 (c) not enough info (d) ₹30
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 9 (c) 90 (d) 18
7. 7.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Kabir bought 3 balls and a cap for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹130 (b) not enough info (c) ₹127 (d) ₹43
10. 10.🧩 Diya is 8 years old. Vihaan is older than Diya. How old is Vihaan? (a) 10 (b) 13 (c) 9 (d) not enough info
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Rohan bought 2 kites and a lunch box for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹70 (b) ₹140 (c) not enough info (d) ₹138
14. 14.🥭 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
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
16. 16.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 5 PM
17. 17.🧩 Saanvi bought 3 balls and a lunch box for ₹260 in all. Each ball cost the same. What did one ball cost? (a) ₹260 (b) ₹86 (c) not enough info (d) ₹257
18. 18.🧩 Nisha is 6 years old. Arjun is 6 years older than Nisha. How old is Arjun? (a) 6 (b) not enough info (c) 12 (d) 13
19. 19.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
20. 20.🧩 Nisha is 10 years old. Diya is older than Nisha. How old is Diya? (a) 15 (b) 12 (c) 11 (d) not enough info
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
22. 22.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
23. 23.🧩 Ishaan bought 6 balls for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹270 (b) ₹50 (c) ₹45 (d) not enough info
24. 24.🧩 Kabir bought 3 balls and a water bottle for ₹255 in all. Each ball cost the same. What did one ball cost? (a) ₹85 (b) ₹255 (c) ₹252 (d) not enough info
25. 25.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
26. 26.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Nisha bought 6 notebooks for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹65 (c) ₹360 (d) not enough info
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
30. 30.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
32. 32.🧩 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
33. 33.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
34. 34.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
35. 35.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Ishaan is 8 years old. Rohan is 8 years older than Ishaan. How old is Rohan? (a) 8 (b) not enough info (c) 17 (d) 16
38. 38.🧩 Meera is 12 years old. Kabir is older than Meera. How old is Kabir? (a) 17 (b) 14 (c) 13 (d) not enough info
39. 39.🧩 Ishaan bought 3 notebooks for ₹45 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) not enough info (c) ₹15 (d) ₹20
40. 40.🧩 Nisha is 9 years old. Meera is older than Nisha. How old is Meera? (a) 10 (b) 14 (c) not enough info (d) 11

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