Question 6 of 11intermediate🔧 ApplyShort Answer3 marks

Identify which of the following numbers are even and which are odd. Explain your reasoning. 30, 46, 78, 67, 300, 154, 415, 99

Correct Answer

Odd numbers: 67, 99, 415

Even numbers: 30, 46, 78, 300, 154

Reasoning: A number is even if its last digit (ones place) is 0, 2, 4, 6, or 8. A number is odd if its last digit is 1, 3, 5, 7, or 9.

Checking odd numbers: 67 ends in 7 (odd) 99 ends in 9 (odd) 415 ends in 5 (odd)

Checking even numbers: 30 ends in 0 (even) 46 ends in 6 (even) 78 ends in 8 (even) 300 ends in 0 (even) 154 ends in 4 (even)

Exercise: Crayons Arrangement | Q: 20 | (Chapter: Page 5)
For More Understanding

Explanation

The chapter teaches students to identify even and odd numbers by looking at the last digit (ones place). Numbers ending in 0, 2, 4, 6, 8 are even because they can be divided into two equal groups. Numbers ending in 1, 3, 5, 7, 9 are odd because one remains when divided into two groups.

Solution Steps

  1. Identify odd numbers: 67, 99, 415

  2. Identify even numbers: 30, 46, 78, 300, 154

  3. A number is even if its last digit (ones place) is 0, 2, 4, 6, or 8.

  4. A number is odd if its last digit is 1, 3, 5, 7, or 9.

  5. 67 ends in 7 (odd)

  6. 99 ends in 9 (odd)

  7. 415 ends in 5 (odd)

  8. 30 ends in 0 (even)

  9. 46 ends in 6 (even)

  10. 78 ends in 8 (even)

  11. 300 ends in 0 (even)

  12. 154 ends in 4 (even)