When given addition problems, it is easier to solve after you have decomposed the numbers. When adding, you can decompose numbers using your knowledge of place value. This is a more effective and efficient way of solving mathematical computations.

Students with learning disabilities sometimes have difficulty solving addition problems that require regrouping. In order to reduce errors and simplify numbers, students can break apart the addends using place value and find partial sums in order to find the total sum.

To promote generalization, the teacher can give students numbers and students have to decompose the numbers on a white board using numerals or visuals of base tens (i.e., rods, units). Students have to demonstrate fluency with place value (i.e., ones, tens, etc.) before adding using decomposition. When students have mastered this subskill, the teacher can incorporate adding 2 or 3 numbers together.