Texas Math Models

Try “number line” or “4.5D”

Unit fractions & decomposing

3/4 Grades 3–4

Grade 3 · one way 14141414 14+14+14 34=14+14+14 one fourth is the UNIT: one of the 4 equal parts three fourths is three of that unit Grade 4 · more than one way 34=14+14+1434=24+1444=1 whole same amount: the parts are just grouped differently

How this one works

How

break the fraction into 1/4s, then group them however you like.

Best when

you are adding, subtracting, or checking someone else’s answer.

seen one of these on a test? See it on a real question: TEKS 4.3D, comparing two fractions, or TEKS 4.2G, decimals and fractions that mean the same thing.

The same problem, other ways