Let’s go through each question one by one and solve them carefully.
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1. What is the sum of 345 + 278?
Add step by step:
345
+278
——
Start from right:
5 + 8 = 13 → write 3, carry 1
4 + 7 = 11, plus 1 = 12 → write 2, carry 1
3 + 2 = 5, plus 1 = 6
Answer:
623
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2. How many sides does a hexagon have?
A hexagon has
6 sides. (Hexa = six)
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3. If you have 12 apples and give away 5, how many are left?
12 - 5 =
7
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4. What is 9 × 7?
9 × 7 =
63
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5. Which number is greater: 405 or 450?
Look at hundreds: both 4
Tens: 0 vs 5 → 450 is greater
Answer:
450
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6. What is half of 50?
50 ÷ 2 =
25
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7. How many minutes in 2 hours?
1 hour = 60 minutes → 2 × 60 =
120 minutes
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8. What is 100 - 37?
100 - 37 =
63
(You can think: 100 - 30 = 70, then 70 - 7 = 63)
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9. Write the next number: 2, 4, 6, 8, ___
Pattern: adding 2 each time → next is
10
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10. What shape has 3 sides?
That’s a
triangle
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11. If 5 friends share 20 candies equally, how many each?
20 ÷ 5 =
4 candies each
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12. What is 8 + 9 + 3?
8 + 9 = 17; 17 + 3 =
20
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13. How many legs do 3 dogs have?
Each dog has 4 legs → 3 × 4 =
12 legs
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14. What is double 15?
15 × 2 =
30
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15. What is 63 ÷ 9?
9 × 7 = 63 → so 63 ÷ 9 =
7
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16. Round 47 to the nearest ten.
47 is closer to 50 than 40 →
50
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17. What is 12 × 5?
12 × 5 =
60
(Or: 10×5=50, 2×5=10 → 50+10=60)
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18. How many centimeters in 1 meter?
100 cm
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19. What is 1/2 of 24?
24 ÷ 2 =
12
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20. If today is Monday, what day is it in 3 days?
Monday → Tuesday (1), Wednesday (2), Thursday (3) →
Thursday
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21. What is 7 × 8?
7 × 8 =
56
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22. How many corners does a square have?
4 corners
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23. What is 1000 - 1?
999
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24. What is 36 ÷ 6?
6 × 6 = 36 → so
6
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25. What is 25 + 25 + 25?
25 + 25 = 50; 50 + 25 =
75
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26. How many wheels on 4 bicycles?
Each bike has 2 wheels → 4 × 2 =
8 wheels
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27. What is 90 - 45?
90 - 45 =
45
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28. What is triple 8?
8 × 3 =
24
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29. What is 11 × 4?
11 × 4 =
44
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30. How many seconds in 1 minute?
60 seconds
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✔ All answers checked and verified.
Final Answer:
1. 623
2. 6
3. 7
4. 63
5. 450
6. 25
7. 120
8. 63
9. 10
10. Triangle
11. 4
12. 20
13. 12
14. 30
15. 7
16. 50
17. 60
18. 100
19. 12
20. Thursday
21. 56
22. 4
23. 999
24. 6
25. 75
26. 8
27. 45
28. 24
29. 44
30. 60
Parent Tip: Review the logic above to help your child master the concept of third grade english worksheet.
