Aligned Standard

M.EE.8.NS.1: Subtract fractions with like denominators (halves, thirds, fourths, and tenths) with minuends less than or equal to one.

Grade Level Standard

This is aligned with the following California State Standards:

  • 8.NS.1 - Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually, and convert a decimal expansion which repeats eventually into a rational number.

Linkage Level Descriptions

Initial Precursor

Communicate understanding of separateness by recognizing objects that are not joined together. Communicate understanding of a subset by recognizing a subset as a set or group of objects within a larger set that share an attribute.

Distal Precursor

Recognize each object as the part of a whole or unit when shown a whole or unit containing a group of objects.

Proximal Precursor

Communicate understanding that when fractional parts are added, it produces a larger portion of the whole, and that when fractional parts are separated, it results in a smaller portion of the whole. Decompose fractions into sums of unit fractions with the same denominator (e.g., 3/7 = 1/7 + 1/7 + 1/7).

Target

Subtract two fractions with common denominators (e.g., 4/5 - 1/5 = 3/5).

Successor

Add or subtract two fractions where one fraction has a denominator of 10 and one has a denominator of 100 (e.g., 5/10 + 1/100 = 50/100 + 1/100 = 51/100).