Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 486 · 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.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
2. 2.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
3. 3.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 9 (b) 24 (c) 18 (d) not enough info
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Vihaan is 7 years old. Aarav is older than Vihaan. How old is Aarav? (a) not enough info (b) 9 (c) 8 (d) 12
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
7. 7.🧩 Tara is 9 years old. Vihaan is older than Tara. How old is Vihaan? (a) 14 (b) 10 (c) not enough info (d) 11
8. 8.🧩 Aarav is 6 years old. Saanvi is 7 years older than Aarav. How old is Saanvi? (a) 14 (b) not enough info (c) 13 (d) 7
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 asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
13. 13.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 60 (c) 12 (d) not enough info
14. 14.🧩 A box has 6 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 14 (b) 56 (c) 48 (d) not enough info
15. 15.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
16. 16.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 2 PM
17. 17.🧩 Kabir is 8 years old. Diya is 4 years older than Kabir. How old is Diya? (a) 13 (b) 12 (c) 4 (d) not enough info
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
19. 19.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
20. 20.🧩 Ananya is 9 years old. Saanvi is older than Ananya. How old is Saanvi? (a) not enough info (b) 10 (c) 11 (d) 14
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
22. 22.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
23. 23.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Ishaan bought 6 markers and a water bottle for ₹360 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹360 (c) ₹354 (d) ₹60
25. 25.🧩 Arjun is 10 years old. Nisha is 4 years older than Arjun. How old is Nisha? (a) 15 (b) not enough info (c) 14 (d) 4
26. 26.🧩 Ananya bought 2 markers and a lunch box for ₹170 in all. Each marker cost the same. What did one marker cost? (a) ₹168 (b) not enough info (c) ₹85 (d) ₹170
27. 27.🧩 Ananya bought 5 kites and a water bottle for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹100 (c) ₹95 (d) not enough info
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Arjun bought 2 balls and a bag for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹75 (b) ₹150 (c) not enough info (d) ₹148
30. 30.🧩 Diya is 11 years old. Aarav is 3 years older than Diya. How old is Aarav? (a) not enough info (b) 3 (c) 15 (d) 14
31. 31.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
33. 33.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
34. 34.🧩 Arjun is 6 years old. Vihaan is older than Arjun. How old is Vihaan? (a) not enough info (b) 8 (c) 7 (d) 11
35. 35.🧩 Diya bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹20 (c) ₹90 (d) ₹15
36. 36.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
37. 37.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
39. 39.🧩 Saanvi is 8 years old. Tara is 7 years older than Saanvi. How old is Tara? (a) 16 (b) 7 (c) 15 (d) not enough info
40. 40.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 32 (b) 24 (c) not enough info (d) 11

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