Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 756 · 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.🧩 Meera is 9 years old. Tara is older than Meera. How old is Tara? (a) not enough info (b) 10 (c) 11 (d) 14
2. 2.🧩 Vihaan is 10 years old. Diya is 7 years older than Vihaan. How old is Diya? (a) 18 (b) 7 (c) 17 (d) not enough info
3. 3.🧩 Rohan bought 4 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹15 (d) ₹10
4. 4.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
6. 6.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 24 (b) 18 (c) not enough info (d) 9
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
8. 8.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
10. 10.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 12 (c) 36 (d) 32
11. 11.🧩 Vihaan bought 3 balls for ₹45 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹20 (c) ₹45 (d) not enough info
12. 12.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
13. 13.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Ananya is 10 years old. Diya is 6 years older than Ananya. How old is Diya? (a) not enough info (b) 6 (c) 16 (d) 17
17. 17.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
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
19. 19.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
21. 21.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 13 (b) 48 (c) not enough info (d) 40
22. 22.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box has 5 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 25 (b) 10 (c) 30 (d) not enough info
24. 24.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
25. 25.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
26. 26.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
27. 27.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 35 (c) 30 (d) 11
28. 28.🧩 Diya bought 6 mangoes and a water bottle for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹160 (b) not enough info (c) ₹26 (d) ₹154
29. 29.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) not enough info (b) 18 (c) 9 (d) 90
30. 30.🧩 Meera is 9 years old. Diya is 6 years older than Meera. How old is Diya? (a) 6 (b) 16 (c) not enough info (d) 15
31. 31.🧩 Tara is 8 years old. Kabir is older than Tara. How old is Kabir? (a) 10 (b) 9 (c) 13 (d) not enough info
32. 32.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
33. 33.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
34. 34.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
35. 35.🧩 Diya bought 5 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹150 (b) ₹35 (c) not enough info (d) ₹30
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
39. 39.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
40. 40.🧩 Ishaan is 9 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 10 (b) 14 (c) not enough info (d) 11

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