Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 146 · 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.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
2. 2.🧩 A box has 4 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 20 (c) 9 (d) 25
3. 3.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Ananya is 11 years old. Kabir is 2 years older than Ananya. How old is Kabir? (a) 13 (b) 14 (c) not enough info (d) 2
7. 7.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
9. 9.🧩 Vihaan is 11 years old. Diya is older than Vihaan. How old is Diya? (a) 16 (b) 13 (c) not enough info (d) 12
10. 10.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
11. 11.🧩 Arjun bought 6 notebooks and a cap for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹140 (b) ₹134 (c) ₹23 (d) not enough info
12. 12.🧩 Kabir bought 4 notebooks and a lunch box for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹96 (c) ₹100 (d) ₹25
13. 13.🧩 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
14. 14.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 7 (c) not enough info (d) 14
15. 15.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) 80 (c) 16 (d) not enough info
16. 16.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Rohan bought 5 balls and a cap for ₹220 in all. Each ball cost the same. What did one ball cost? (a) ₹215 (b) ₹44 (c) ₹220 (d) not enough info
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
19. 19.🧩 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
20. 20.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 8 PM
21. 21.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
24. 24.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
25. 25.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Nisha bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹90 (b) ₹15 (c) ₹20 (d) not enough info
27. 27.🧩 Ananya bought 6 mangoes and a cap for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹26 (b) not enough info (c) ₹154 (d) ₹160
28. 28.🧩 Aarav bought 6 pens and a water bottle for ₹310 in all. Each pen cost the same. What did one pen cost? (a) ₹51 (b) ₹304 (c) not enough info (d) ₹310
29. 29.🧩 Diya is 6 years old. Tara is 6 years older than Diya. How old is Tara? (a) 12 (b) 6 (c) 13 (d) not enough info
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
31. 31.🥭 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) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
32. 32.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
33. 33.🧩 A box has 6 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 24 (b) not enough info (c) 28 (d) 10
34. 34.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 48 (c) 54 (d) 14
35. 35.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
36. 36.🧩 Saanvi bought 3 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹90 (b) ₹35 (c) not enough info (d) ₹30
37. 37.🧩 Aarav is 7 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 8 (b) 9 (c) 12 (d) not enough info
38. 38.🧩 Meera bought 2 mangoes for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) not enough info (c) ₹70 (d) ₹35
39. 39.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 20 (b) not enough info (c) 15 (d) 8
40. 40.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info

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