Subjects
Grades
Decomposing Numbers | Elementary
Concept sheet | Mathematics
How do you decompose a number?
It is important to understand place value before learning how to decompose numbers.
For a reminder, read the concept sheet on Place Value.
A number can be decomposed using objects or pictures.
A number can be decomposed according to the positions of its digits.
2 075 = 2 th + 7 t + 5 o
A number can be decomposed according to the value of each of its digits.
2 075 = 2 000 + 70 + 5
or
2 075 = (2 × 1 000) + (7 × 10) + (5 × 1)
How do you decompose a decimal number?
It is important to understand place value before learning how to decompose decimal numbers.
For a reminder, read the concept sheet on Place Value.
A number can be decomposed according to the value of each of its digits.
104.32 = 100 + 1 + 1 + 1 + 1 + 0.1 + 0.1 + 0.1 + 0.01 + 0.01
or
104.32 = 100 + 4 + 0.3 + 0.02