Which of the following statements is true about odd and/or even numbers? F. The sum of any 2 even numbers is odd. G. The sum of any 2 odd numbers is odd. H. The quotient of any 2 even numbers is odd. J. The quotient of any 2 even numbers is even. K. The product of any 2 odd numbers is odd.

Understanding the arithmetic properties of numbers, particularly even and odd numbers, is fundamental to working with integer operations. Even numbers can be defined as integers that are multiples of 2, while odd numbers are integers that are 1 more, or 1 less, than a multiple of 2.

When performing basic operations with even and odd numbers, there are key properties to remember:

• The sum of two even numbers is always even, as they can be divided into pairs without any leftovers.
• The sum of two odd numbers is also even, since each odd number has a 'pair' and leaves one 'out', combining two odd numbers results in all 'outs' forming new pairs.
• The product of two even numbers is even, as you're essentially multiplying multiples of 2.
• The product of an even and an odd number is always even because the even number's factor of 2 ensures the product is a multiple of 2.
• The product of two odd numbers is always odd, because without a factor of 2, there's no way to create a multiple of 2.

These properties underline the importance of recognizing number types in arithmetic operations, which is essential for solving many mathematical problems.

Integer operations involve basic arithmetic: addition, subtraction, multiplication, and division, with whole numbers including negatives, zero, and positives. The operations follow specific rules when dealing with even and odd numbers.

For example, when adding or subtracting two even numbers or two odd numbers, the result is always even. Contrastly, adding or subtracting an even and an odd number results in an odd number. During multiplication, any number multiplied by an even number results in an even product, while odd numbers retain their 'oddness' when multiplied together. Division can be trickier, as the result depends on whether the divisor is a factor of the dividend or not.

When working with integers, it's also important to consider properties like commutativity (e.g., \(a + b = b + a\)), associativity (e.g., \((a + b) + c = a + (b + c)\)), and distributivity (e.g., \(a \times (b + c) = a \times b + a \times c\)). These properties are the tools that simplify complex operations and help to solve equations methodically.

The ACT Math section tests a student's problem-solving abilities using a variety of mathematical concepts, which include a strong understanding of even and odd numbers as part of integer operations. Key strategies for success on the ACT include:

• Understanding and applying the rules of even and odd numbers.
• Remembering arithmetic properties to simplify and solve problems efficiently.
• Practicing integer operations to ensure fluency and accuracy.
• Knowing the order of operations and applying it correctly in multi-step problems.
• Checking your work by plugging your answer back into the problem to ensure it makes sense.
• Learning to recognize patterns and apply shortcuts, such as the rules surrounding even/odd arithmetic, to save time.

Time management is essential, so students are advised to familiarize themselves with the types of questions posed in the exercise and solution presented. By preparing with exercises and utilizing these strategies, students can improve their performance in the ACT Math section.