FTCE Pre-K Prekindergarten PK-3 Practice Exam

Which of the following is NOT a model that helps students understand subtraction?

1. Take away

2. Missing addend

3. Number line

4. Adding zero

The correct answer is: Adding zero

Adding zero is not a model that helps students understand subtraction, as it primarily pertains to addition. It involves the concept that adding zero to a number does not change its value. Understanding subtraction often involves models that convey the idea of removing or finding differences among numbers. The other options, such as take away, missing addend, and number line, are all instrumental in illustrating subtraction. The take away model visually represents subtraction as the action of removing objects from a group. The missing addend model helps students understand that subtraction can be viewed as finding the number that, when added to the smaller number, results in the larger number. The number line provides a visual tool to illustrate how moving left represents subtraction, allowing students to see the relationship between numbers subtractively.