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28. Calculati 20449 + V285156 - 54289; c) V229441 +_301401 - 1546121; b) 2916 +141616 - 111664 ; d) N467856 +264196 - 1826281. Matema a 17​

28 Calculati 20449 V285156 54289 C V229441 301401 1546121 B 2916 141616 111664 D N467856 264196 1826281 Matema A 17 class=

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c)

rad229441 | 479

16 | 87×7

_______ | 949×9

694

609

_________

=8541

=8541

rad301401 | 549

25 | 104×4

________ | 1089×9

514

416

________

=9801

=9801

rad546121 | 739

49 | 143×3

_______ | 1469×9

561

429

________

13221

13221

479 + 549 - 739 = 289

d)

rad467856 = 684

rad264196 = 514

rad826281 = 909

684 + 514 - 909 = 289

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