Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 148 · 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 tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Rohan bought 4 balls for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹80 (c) ₹20 (d) not enough info
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
4. 4.🥭 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
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
6. 6.🧩 Arjun is 9 years old. Saanvi is 3 years older than Arjun. How old is Saanvi? (a) 13 (b) 3 (c) not enough info (d) 12
7. 7.🧩 Ananya bought 5 kites and a water bottle for ₹365 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹360 (c) ₹73 (d) ₹365
8. 8.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Kabir bought 5 kites and a bag for ₹305 in all. Each kite cost the same. What did one kite cost? (a) ₹305 (b) ₹61 (c) ₹300 (d) not enough info
10. 10.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
11. 11.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
12. 12.🧩 Vihaan is 6 years old. Aarav is 9 years older than Vihaan. How old is Aarav? (a) not enough info (b) 9 (c) 16 (d) 15
13. 13.🧩 Aarav bought 2 notebooks for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹55 (c) ₹60 (d) ₹110
14. 14.🧩 Tara bought 5 notebooks and a cap for ₹305 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹300 (c) ₹61 (d) ₹305
15. 15.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) not enough info (b) 12 (c) 6 (d) 60
16. 16.🧩 Nisha bought 4 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) not enough info (c) ₹15 (d) ₹40
17. 17.🐕 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
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 6 PM
22. 22.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
23. 23.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) 12 (b) 42 (c) 36 (d) not enough info
24. 24.🧩 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
25. 25.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
26. 26.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 4 PM
27. 27.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
28. 28.🧩 Rohan bought 6 balls for ₹330 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹330 (d) ₹55
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
30. 30.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
31. 31.🧩 A box has 4 rows of apples, with 9 in each row. How many apples are in the box? (a) 13 (b) not enough info (c) 45 (d) 36
32. 32.🧩 Aarav bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹10
33. 33.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
35. 35.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
36. 36.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
37. 37.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 8 PM (d) 7 PM
38. 38.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
39. 39.🧩 Arjun is 10 years old. Vihaan is 3 years older than Arjun. How old is Vihaan? (a) 13 (b) 3 (c) not enough info (d) 14
40. 40.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 6 PM (c) not enough info (d) 8 PM

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