Identify the numbers as even or odd. Now choose any two digits and make 2-digit numbers in such a way that the numbers are even.
Given: Numbers 16 and 61
Analysis: 16 is even (ends in 6) 61 is odd (ends in 1)
Rule: To make even 2-digit numbers, the ones digit must be 0, 2, 4, 6, or 8.
Example 1: Using digits 2 and 4: 24 and 42 are both even.
Example 2: Using digits 3 and 6: 36 is even but 63 is odd.
Answer: Choose digits where at least one digit is even (0, 2, 4, 6, 8) and place it in the ones place.
Explanation
The chapter teaches that for a number to be even, its ones digit must be even. When forming 2-digit numbers, students must ensure the ones place contains an even digit (0, 2, 4, 6, 8). This helps students apply the even-odd concept creatively.
Solution Steps
Identify the given numbers as even or odd based on their ones digit.
For even 2-digit numbers, the ones digit must be 0, 2, 4, 6, or 8.
Choose two digits where at least one is even.
Place the even digit in the ones place to form an even 2-digit number.