Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 164 · 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.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
2. 2.🧩 Diya is 6 years old. Aarav is 2 years older than Diya. How old is Aarav? (a) 9 (b) not enough info (c) 8 (d) 2
3. 3.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
4. 4.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
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
8. 8.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
9. 9.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
10. 10.🧩 Tara bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹70
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
12. 12.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
13. 13.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.🧩 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
16. 16.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Tara is 7 years old. Aarav is older than Tara. How old is Aarav? (a) 12 (b) 8 (c) not enough info (d) 9
18. 18.🧩 Rohan bought 2 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) ₹45 (c) ₹50 (d) not enough info
19. 19.🧩 Vihaan bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹30 (d) ₹15
20. 20.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
21. 21.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
22. 22.🧩 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
23. 23.🧩 Tara is 7 years old. Diya is 6 years older than Tara. How old is Diya? (a) 6 (b) not enough info (c) 13 (d) 14
24. 24.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
25. 25.🥭 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, it is certain (c) no mango is sweet (d) yes, mangoes match
26. 26.🧩 Nisha bought 4 balls for ₹220 in all. Each ball cost the same. What did one ball cost? (a) ₹220 (b) not enough info (c) ₹55 (d) ₹60
27. 27.🧩 Ananya bought 3 mangoes and a cap for ₹225 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) ₹222 (c) ₹225 (d) not enough info
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Tara is 11 years old. Kabir is older than Tara. How old is Kabir? (a) 12 (b) 16 (c) 13 (d) not enough info
30. 30.🧩 Kabir is 7 years old. Rohan is 7 years older than Kabir. How old is Rohan? (a) 7 (b) 14 (c) not enough info (d) 15
31. 31.🧩 Nisha is 7 years old. Kabir is older than Nisha. How old is Kabir? (a) 12 (b) 8 (c) 9 (d) not enough info
32. 32.🧩 Meera is 10 years old. Ishaan is older than Meera. How old is Ishaan? (a) not enough info (b) 15 (c) 12 (d) 11
33. 33.🧩 A box has 4 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 32 (b) 12 (c) 40 (d) not enough info
34. 34.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
35. 35.📊 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
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
37. 37.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 16 (c) 8 (d) 80
38. 38.🧩 Ananya is 8 years old. Saanvi is 5 years older than Ananya. How old is Saanvi? (a) 13 (b) not enough info (c) 14 (d) 5
39. 39.🧩 Ishaan is 12 years old. Arjun is older than Ishaan. How old is Arjun? (a) 14 (b) 17 (c) 13 (d) not enough info
40. 40.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True

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