What are the benchmark numbers used for foundational number sense?

The benchmark numbers used for foundational number sense are fundamental fractions and whole numbers that help students grasp the concepts of quantity and relationships between numbers. The correct answer includes a mix of these numbers: 0, 1/10, 1/2, 1, 10, 12, and 100.

This selection is particularly important because it spans across various scales, from decimal fractions to whole numbers and larger values. These benchmarks allow students to understand and visualize different types of numbers, including parts of a whole (like fractions) and their connection to whole numbers.

For instance, having 1/10 and 1/2 introduces students to fractions, which are essential for developing a robust number sense, especially when they begin to compare and calculate with different forms of quantities. Additionally, whole numbers like 1, 10, and 100 serve as key reference points for counting and understanding numeric growth.

This diverse range equips students with a more comprehensive understanding of the number system, facilitating easier transitions into more advanced mathematical concepts.