MathematicsBeginner

The meaning of the four operations

Addition undoes subtraction, multiplication undoes division

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Core concepts

Formulas

被减数=差+减数,被除数=商×除数+余数\text{被减数}=\text{差}+\text{减数},\qquad \text{被除数}=\text{商}\times\text{除数}+\text{余数}

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Glossary

Inverse operation
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