addition and subtraction of numbers

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Add and subtract the following

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Slovní úlohy

Addition and Subtraction - Math

Procvičování pochopení slovních úloh, výběr správného postupu jejich řešení.

Expressões numéricas

Addition and Subtraction - Math

Ordem das operações com numeros inteiros

Espressioni senza parentesi

Addition and Subtraction - Math

espressioni con tutte le operazioni senza parentesi

Упражнение 5

Addition and Subtraction - Math

Проверка със събиране