Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 134 · 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: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
3. 3.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
4. 4.🧩 A box has 8 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 13 (c) 45 (d) 40
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
7. 7.🧩 Ishaan is 6 years old. Nisha is 4 years older than Ishaan. How old is Nisha? (a) 4 (b) 10 (c) not enough info (d) 11
8. 8.🧩 Ishaan bought 4 mangoes for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹160 (c) not enough info (d) ₹45
9. 9.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
10. 10.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) yes, mangoes match (d) no mango is sweet
11. 11.🧩 Rohan bought 6 notebooks and a lunch box for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹294 (c) not enough info (d) ₹300
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
13. 13.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Ananya is 7 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 8 (b) not enough info (c) 12 (d) 9
17. 17.🧩 Vihaan is 8 years old. Nisha is older than Vihaan. How old is Nisha? (a) not enough info (b) 13 (c) 9 (d) 10
18. 18.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
19. 19.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Aarav bought 4 notebooks and a water bottle for ₹310 in all. Each notebook cost the same. What did one notebook cost? (a) ₹306 (b) ₹310 (c) not enough info (d) ₹77
21. 21.🧩 Tara is 12 years old. Saanvi is older than Tara. How old is Saanvi? (a) 13 (b) not enough info (c) 17 (d) 14
22. 22.🧩 Ishaan is 9 years old. Vihaan is 5 years older than Ishaan. How old is Vihaan? (a) 15 (b) not enough info (c) 5 (d) 14
23. 23.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
24. 24.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
26. 26.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
27. 27.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
29. 29.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
30. 30.🧩 Kabir bought 4 kites for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹160 (b) not enough info (c) ₹40 (d) ₹45
31. 31.🧩 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
32. 32.🧩 Saanvi bought 3 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹120
33. 33.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
34. 34.🧩 Ishaan bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹75 (c) ₹30 (d) not enough info
35. 35.🧩 Vihaan bought 6 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹180 (b) not enough info (c) ₹30 (d) ₹35
36. 36.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
37. 37.🧩 Meera is 10 years old. Saanvi is 2 years older than Meera. How old is Saanvi? (a) 13 (b) not enough info (c) 12 (d) 2
38. 38.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
39. 39.🧩 Kabir bought 4 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹120 (c) ₹30 (d) not enough info
40. 40.🧩 Diya is 12 years old. Nisha is older than Diya. How old is Nisha? (a) 14 (b) not enough info (c) 17 (d) 13

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