Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 995 · 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.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 8 PM
2. 2.🧩 A box has 7 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 40 (b) not enough info (c) 35 (d) 12
3. 3.🥭 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) yes, mangoes match (c) no, check more (d) yes, it is certain
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
5. 5.🧩 Vihaan is 12 years old. Saanvi is 2 years older than Vihaan. How old is Saanvi? (a) not enough info (b) 14 (c) 2 (d) 15
6. 6.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
9. 9.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
10. 10.🧩 Ananya is 6 years old. Meera is 4 years older than Ananya. How old is Meera? (a) not enough info (b) 11 (c) 10 (d) 4
11. 11.🧩 Aarav bought 2 notebooks and a bag for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) ₹98 (c) not enough info (d) ₹50
12. 12.🧩 A box has 3 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 28 (d) 21
13. 13.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 9 PM
14. 14.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 10 PM
15. 15.🧩 Aarav is 7 years old. Ananya is older than Aarav. How old is Ananya? (a) 8 (b) 9 (c) not enough info (d) 12
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Ishaan is 8 years old. Vihaan is 8 years older than Ishaan. How old is Vihaan? (a) not enough info (b) 8 (c) 17 (d) 16
18. 18.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
19. 19.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
20. 20.🧩 Tara is 8 years old. Vihaan is older than Tara. How old is Vihaan? (a) 13 (b) 9 (c) not enough info (d) 10
21. 21.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
22. 22.🧩 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
23. 23.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
24. 24.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Arjun bought 2 balls and a lunch box for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹148 (b) not enough info (c) ₹150 (d) ₹75
29. 29.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 3 PM
30. 30.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
31. 31.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
32. 32.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Rohan bought 6 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹20 (c) ₹15 (d) not enough info
34. 34.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
35. 35.🧩 Kabir bought 2 balls and a bag for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹78 (b) not enough info (c) ₹80 (d) ₹40
36. 36.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
38. 38.🧩 A box has 6 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 24 (b) 28 (c) 10 (d) not enough info
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
40. 40.🧩 Tara bought 3 mangoes and a cap for ₹110 in all. Each mango cost the same. What did one mango cost? (a) ₹36 (b) not enough info (c) ₹110 (d) ₹107

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