Повтори изученную тему. Составь равенства и неравенства
20 тг + 5 тг = ... Tr + ... TI + ... тг
20 тг + 50 тг = ... тг +....
20 тг + 2 тг + 20 тг < ... тг +......
50 тг + 50 тг > ......
10 тг + 10 тг + 10 тг + 10 тг с. ...
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amereu​
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