Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 273 · 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. Saanvi is older than Meera. How old is Saanvi? (a) 11 (b) 10 (c) not enough info (d) 14
2. 2.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
3. 3.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
6. 6.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
7. 7.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
8. 8.🧩 A box has 8 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 14 (b) 48 (c) not enough info (d) 54
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
10. 10.🧩 Meera is 12 years old. Saanvi is older than Meera. How old is Saanvi? (a) 17 (b) not enough info (c) 14 (d) 13
11. 11.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
13. 13.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
14. 14.🧩 A box has 6 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 63 (b) not enough info (c) 54 (d) 15
15. 15.🧩 Vihaan is 12 years old. Aarav is 7 years older than Vihaan. How old is Aarav? (a) not enough info (b) 20 (c) 19 (d) 7
16. 16.🧩 Tara is 6 years old. Saanvi is 3 years older than Tara. How old is Saanvi? (a) 9 (b) 3 (c) 10 (d) not enough info
17. 17.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 15 (b) not enough info (c) 63 (d) 54
18. 18.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
19. 19.🥭 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) yes, mangoes match (c) yes, it is certain (d) no, check more
20. 20.🧩 Arjun is 7 years old. Ishaan is older than Arjun. How old is Ishaan? (a) 12 (b) 8 (c) not enough info (d) 9
21. 21.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
23. 23.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
24. 24.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Tara is 12 years old. Diya is older than Tara. How old is Diya? (a) 14 (b) not enough info (c) 13 (d) 17
27. 27.🧩 Vihaan bought 3 pens and a water bottle for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) not enough info (c) ₹147 (d) ₹50
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
30. 30.🧩 Meera is 6 years old. Kabir is 4 years older than Meera. How old is Kabir? (a) not enough info (b) 4 (c) 11 (d) 10
31. 31.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
32. 32.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
33. 33.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
34. 34.🧩 Rohan is 10 years old. Nisha is 2 years older than Rohan. How old is Nisha? (a) 12 (b) 13 (c) not enough info (d) 2
35. 35.🧩 Kabir bought 5 notebooks for ₹225 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) not enough info (c) ₹225 (d) ₹45
36. 36.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
37. 37.🧩 A box has 6 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 30 (b) 11 (c) not enough info (d) 35
38. 38.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
39. 39.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
40. 40.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence

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