If you're seeing this message, it means we're having trouble loading external resources on our website.

Pokud používáš webový filtr, ujisti se, že domény: *.kastatic.org and *.kasandbox.org jsou vyloučeny z filtrování.

Hlavní obsah

STANDARDS

 > 

US-NY

Math

New York Math

Grade 3: Number and Operations – Fractions

Develop understanding of fractions as numbers.

NY-3.NF.1

Fully covered
Understand a unit fraction, 1/b, is the quantity formed by 1 part when a whole is partitioned into b equal parts. Understand a fraction a/b as the quantity formed by a parts of size 1/b.

NY-3.NF.2

Understand a fraction as a number on the number line; represent fractions on a number line.

NY-3.NF.2.a

Fully covered
Represent a fraction 1/b on a number line by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part starting at 0 locates the number 1/b on the number line.

NY-3.NF.2.b

Fully covered
Represent a fraction a/b on a number line by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.

NY-3.NF.3

Explain equivalence of fractions and compare fractions by reasoning about their size.

NY-3.NF.3.a

Fully covered
Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.

NY-3.NF.3.b

Fully covered
Recognize and generate equivalent fractions. Explain why the fractions are equivalent.

NY-3.NF.3.c

Fully covered
Express whole numbers as fractions, and recognize fractions that are equivalent to whole numbers.

NY-3.NF.3.d

Fully covered
Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons rely on the two fractions referring to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions.