Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 619 · 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? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
2. 2.🧩 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
3. 3.🧩 Vihaan bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) not enough info (c) ₹10 (d) ₹15
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.🐕 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
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
7. 7.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
8. 8.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
10. 10.🧩 Ishaan bought 2 notebooks and a lunch box for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹108 (c) ₹110 (d) ₹55
11. 11.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) 12 (b) 32 (c) not enough info (d) 36
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
13. 13.🧩 Vihaan is 6 years old. Nisha is 9 years older than Vihaan. How old is Nisha? (a) 16 (b) 15 (c) not enough info (d) 9
14. 14.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
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 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
17. 17.🧩 A box has 8 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 45 (b) not enough info (c) 13 (d) 40
18. 18.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
19. 19.🧩 Ishaan is 6 years old. Rohan is older than Ishaan. How old is Rohan? (a) 11 (b) 8 (c) not enough info (d) 7
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
21. 21.🥭 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
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Ananya bought 6 pens and a cap for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹144 (b) ₹150 (c) not enough info (d) ₹25
24. 24.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
25. 25.🧩 Ishaan bought 4 kites and a cap for ₹280 in all. Each kite cost the same. What did one kite cost? (a) ₹276 (b) ₹280 (c) not enough info (d) ₹70
26. 26.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
29. 29.🧩 Rohan bought 4 balls for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) not enough info (c) ₹80 (d) ₹20
30. 30.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
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: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
33. 33.🧩 Meera is 11 years old. Ananya is older than Meera. How old is Ananya? (a) 12 (b) 16 (c) 13 (d) not enough info
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
35. 35.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 3 PM
36. 36.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Tara bought 4 kites for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹55 (b) ₹50 (c) ₹200 (d) not enough info
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
39. 39.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) 6 (c) not enough info (d) 12
40. 40.🧩 Ishaan bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹35 (c) not enough info (d) ₹175

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