Adding and Subtracting Numbers

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The content aids in vocabulary acquisition for both English and Japanese learners.
How does it achieve this?
Through the content, learners grasp words and phrases more intuitively because they already know their meanings in their native language.
It is like learning the word “apple” by looking at a picture of one.
STEM-Plus Content facilitates easy learning of abstract yet useful words.

To ensure effective and efficient learning, the content is designed to be concise and illustrative.
Learners can easily understand the material through images and examples.

In addition, the content provides useful tips on math and other STEM subjects, supporting
academic success in these important fields.

How to use:
Carefully selected English words and phrases related to “Adding and Subtracting Numbers” are highlighted in yellow in the images below. The words are also summarized at the bottom of this page.
We recommend reviewing them regularly during your daily math studies to enhance your vocabulary.

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Adding Integers with the Same Sign

  • to add integers with the same sign: 同符号の整数の加法:絶対値を加える・共通の符号を使う。
How to add integers with the same sign.

Adding integers with the same sign

Adding Integers with different Signs

  • to add integers with different signs: 異符号の整数の加法:絶対値の大きいほうから小さいほうをひく・絶対値の大きいほうの符号を使う。
  • additive inverse property: 加法逆数の性質:ある数とその反数との和は0。
How to add integers with different signs.

Adding integers with different signs

Subtracting Integers

  • to subtract integers:  整数の減法:ある整数を引くには、その反数を加える。
How to subtract integers.

Subtracting integers


add を加える

common 共通の;普通の

sign 印;兆候



・”Algebra tiles”「代数タイル」, which is common in English textbooks, are not covered in Japanese textbooks.

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