Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 761 · 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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Aarav is 7 years old. Ishaan is 2 years older than Aarav. How old is Ishaan? (a) not enough info (b) 10 (c) 2 (d) 9
3. 3.🧩 Rohan is 11 years old. Vihaan is 8 years older than Rohan. How old is Vihaan? (a) not enough info (b) 8 (c) 20 (d) 19
4. 4.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
5. 5.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
7. 7.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) 9 (b) not enough info (c) 20 (d) 25
8. 8.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
9. 9.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
10. 10.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
12. 12.🧩 Saanvi bought 3 notebooks and a lunch box for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) ₹167 (b) ₹56 (c) ₹170 (d) not enough info
13. 13.🧩 Aarav bought 3 kites and a lunch box for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹100 (b) ₹33 (c) not enough info (d) ₹97
14. 14.🧩 Ishaan bought 4 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹120
15. 15.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 63 (b) 54 (c) 15 (d) not enough info
16. 16.🧩 Ananya is 6 years old. Tara is 9 years older than Ananya. How old is Tara? (a) 9 (b) 16 (c) 15 (d) not enough info
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
18. 18.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 5 PM
19. 19.🧩 Saanvi is 7 years old. Kabir is older than Saanvi. How old is Kabir? (a) 8 (b) 12 (c) not enough info (d) 9
20. 20.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
21. 21.🧩 Tara is 11 years old. Meera is older than Tara. How old is Meera? (a) not enough info (b) 13 (c) 12 (d) 16
22. 22.🧩 Arjun bought 2 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) not enough info (c) ₹120 (d) ₹60
23. 23.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
24. 24.🧩 Aarav is 8 years old. Saanvi is older than Aarav. How old is Saanvi? (a) not enough info (b) 9 (c) 13 (d) 10
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
26. 26.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
28. 28.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
29. 29.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 72 (b) not enough info (c) 81 (d) 17
30. 30.🧩 Kabir is 7 years old. Diya is 5 years older than Kabir. How old is Diya? (a) 5 (b) not enough info (c) 13 (d) 12
31. 31.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Ananya bought 4 notebooks for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹140 (b) not enough info (c) ₹40 (d) ₹35
33. 33.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
35. 35.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
36. 36.🧩 Arjun is 9 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 11 (b) 10 (c) not enough info (d) 14
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
38. 38.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no, check more (d) no mango is sweet
39. 39.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) the colour of ink (d) your handwriting
40. 40.🧩 A box has 5 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 13 (b) 48 (c) not enough info (d) 40

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