Mathematics, 30.07.2021 03:30 thedaisylopez3628
A continuación se realizan algunas ope-raciones de forma oral. Indica en cada caso las estrategias utilizadas y qué pro-piedades de las operaciones se están uti-lizando:
a) 2.453 − 1.238, dos mil cuatrocientos cincuenta y tres menos mil doscien-tos, mil doscientos cincuenta y tres, menos treinta, mil doscientos veinti-trés, mil doscientos veinte menos cin-co, mil doscientos quince.
b) 197 + 322 + 38, trescientos treinta y treinta, trescientos sesenta, más dos-cientos, quinientos sesenta, menos tres, quinientos cincuenta y siete.
Answers: 3
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