Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 927 · 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.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
2. 2.🧩 Kabir is 7 years old. Vihaan is 7 years older than Kabir. How old is Vihaan? (a) not enough info (b) 15 (c) 14 (d) 7
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
5. 5.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
6. 6.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 8 PM
7. 7.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
8. 8.🧩 Kabir is 10 years old. Aarav is 5 years older than Kabir. How old is Aarav? (a) 5 (b) not enough info (c) 15 (d) 16
9. 9.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
10. 10.🧩 Ananya bought 6 pens for ₹360 in all. Each pen cost the same. What did one pen cost? (a) ₹360 (b) ₹65 (c) not enough info (d) ₹60
11. 11.🧩 Rohan bought 6 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) ₹25 (c) not enough info (d) ₹20
12. 12.🧩 Diya is 10 years old. Nisha is 8 years older than Diya. How old is Nisha? (a) 18 (b) 8 (c) 19 (d) not enough info
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
14. 14.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
15. 15.🧩 Saanvi bought 6 kites and a water bottle for ₹130 in all. Each kite cost the same. What did one kite cost? (a) ₹130 (b) ₹124 (c) ₹21 (d) not enough info
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
17. 17.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
18. 18.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
19. 19.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
20. 20.🧩 Nisha bought 3 kites for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹55 (b) ₹165 (c) not enough info (d) ₹60
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
22. 22.🧩 Nisha is 7 years old. Ishaan is 2 years older than Nisha. How old is Ishaan? (a) 9 (b) 10 (c) 2 (d) not enough info
23. 23.🧩 Ishaan bought 6 kites and a water bottle for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹270 (c) ₹264 (d) not enough info
24. 24.🧩 Arjun bought 4 notebooks and a cap for ₹190 in all. Each notebook cost the same. What did one notebook cost? (a) ₹47 (b) ₹190 (c) ₹186 (d) not enough info
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
26. 26.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Kabir bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹35 (c) ₹180 (d) ₹30
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
31. 31.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
32. 32.🧩 Saanvi bought 4 notebooks and a lunch box for ₹280 in all. Each notebook cost the same. What did one notebook cost? (a) ₹276 (b) ₹70 (c) ₹280 (d) not enough info
33. 33.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 5 PM (d) 8 PM
34. 34.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 36 (b) 45 (c) not enough info (d) 13
35. 35.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
36. 36.🧩 Aarav is 12 years old. Meera is older than Aarav. How old is Meera? (a) 14 (b) 17 (c) not enough info (d) 13
37. 37.🧩 Saanvi bought 2 mangoes and a water bottle for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹148 (b) not enough info (c) ₹150 (d) ₹75
38. 38.🧩 Meera bought 4 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹50 (c) ₹180 (d) ₹45
39. 39.🧩 A box has 8 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 64 (b) not enough info (c) 16 (d) 72
40. 40.🧩 Aarav bought 6 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) not enough info (c) ₹25 (d) ₹120

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