Composing and Decomposing Numbers Using Addition

Number relationships provide the foundation for strategies that help pupils remember basic facts. Throughout mathematics in Kindergarten-Grade 2, students develop numerical fluency with conceptual understanding and computational accuracy. A Grade 1 standard in the K to 12 curriculum in Mathematics is “compose and decompose numbers.” This basically means to break a number into as many sets as possible, such as: 8 can be eight groups of one, two groups of four, a group of eight and a group of zero, a group of seven and a group of one, and so on. Basic number sense is used to compose and decompose numbers in order to solve problems requiring precision, estimation, and reasonableness.

The following is a lesson plan on teaching “composing and decomposing numbers” using the Cebuano and Ilonggo language. This is hoped to help teachers who are using their mother tongue in teaching this topic.The lesson plan is using Cebuano or Ilonggo language in the discussion of the lesson although it retains the English translation.

Grade level: 1

Language: Ilonggo

Download (DOCX, 1.3MB)

Language: Cebuano

Below is the worksheet for this lesson. The worksheet is written in four languages: English, Tagalog, Cebuano, and Waray (Leyte). The one shown below is the version in English.

Download (PDF, 481KB)

You may also download the other versions of these worksheets:

Tagalog Version: Worksheet Composing and decomposing numbers (Tag)

Cebuano Version: Worksheet Composing and decomposing by addition (Ceb)

Waray Version: Worksheet Composing and decomposing numbers (Waray)
Special thanks to Dr. Edith Villaflor for reviewing the Cebuano version and Mr. Guillermo Bautista for translating to Ilonggo version.

This material may be downloaded upon sending a request e-mail to

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