bilangan bulat

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menulis adan mengurutkan bilangan bulat positif dan negatif

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استخدام النماذج في عملية الجمع

Addition and Subtraction - Math

adding number with 3 digits

Problemas de Mate

Addition and Subtraction - Math

Resolución de problemas

Operadores Matemáticos

Addition and Subtraction - Math

Operadores matemáticos

Calcolo mentale:addizioni e sottrazioni

Addition and Subtraction - Math

ESRCITAZIONE DEL CALCOLO MENTALE DI ADDIZIONI E SOTTRAZIONI IN TABELLE, IN SERIE NUMERICHE, IN RIGA.