Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 399 · 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 12 years old. Tara is 9 years older than Nisha. How old is Tara? (a) 22 (b) 21 (c) not enough info (d) 9
2. 2.🧩 A box has 3 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 15 (d) 20
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
4. 4.🧩 Diya is 10 years old. Ishaan is 3 years older than Diya. How old is Ishaan? (a) 13 (b) 14 (c) 3 (d) not enough info
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.🧩 Rohan bought 6 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹120 (d) ₹25
7. 7.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) not enough info (b) 13 (c) 45 (d) 36
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
9. 9.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 60 (c) 12 (d) not enough info
10. 10.🧩 Ananya is 10 years old. Tara is older than Ananya. How old is Tara? (a) 12 (b) 15 (c) not enough info (d) 11
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
12. 12.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
13. 13.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
14. 14.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 28 (b) 11 (c) 35 (d) not enough info
15. 15.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 13 (c) 36 (d) 45
16. 16.🧩 Tara bought 5 pens and a cap for ₹185 in all. Each pen cost the same. What did one pen cost? (a) ₹37 (b) ₹185 (c) not enough info (d) ₹180
17. 17.🥭 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
18. 18.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
19. 19.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
20. 20.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
21. 21.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
22. 22.🧩 Ishaan is 7 years old. Kabir is older than Ishaan. How old is Kabir? (a) 12 (b) not enough info (c) 8 (d) 9
23. 23.🧩 Nisha bought 3 markers for ₹105 in all. Each marker cost the same. What did one marker cost? (a) ₹105 (b) ₹35 (c) not enough info (d) ₹40
24. 24.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
27. 27.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) not enough info (c) 14 (d) 56
28. 28.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 16 (b) 80 (c) not enough info (d) 8
29. 29.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
30. 30.🧩 Kabir is 9 years old. Diya is 5 years older than Kabir. How old is Diya? (a) not enough info (b) 14 (c) 5 (d) 15
31. 31.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Meera bought 6 markers for ₹210 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹35 (c) ₹210 (d) ₹40
33. 33.🧩 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
34. 34.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 12 (b) 60 (c) not enough info (d) 6
35. 35.🧩 Aarav is 7 years old. Meera is older than Aarav. How old is Meera? (a) not enough info (b) 12 (c) 8 (d) 9
36. 36.🧩 Ananya is 11 years old. Arjun is older than Ananya. How old is Arjun? (a) not enough info (b) 13 (c) 12 (d) 16
37. 37.🧩 Diya is 6 years old. Vihaan is 2 years older than Diya. How old is Vihaan? (a) 9 (b) not enough info (c) 2 (d) 8
38. 38.🧩 Vihaan is 7 years old. Tara is 6 years older than Vihaan. How old is Tara? (a) 6 (b) not enough info (c) 13 (d) 14
39. 39.🧩 Arjun is 6 years old. Kabir is older than Arjun. How old is Kabir? (a) 8 (b) not enough info (c) 7 (d) 11
40. 40.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 40 (c) 4 (d) 8

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