Question

1. Calculează respectând ordinea efectuării operațiilor:
4 * (5 + 7 + 8) =
63 + 61 x 15 - 12 =
347 -27 : 3 + 8 x 6 - 130 =
65 x8 - 21:3* 7 + 65 =
35: 5 * 36 + 87 * 10 x 6 - 2549 =​

Answer 1

Răspuns:

4×(5+7+8)

=4×(12+8)

=4×20

=80

63+61×15-12

=63+915-12

=978-12

=966

347-27:3+8×6-130

=347-9+48-130

=338+48-130

=386-130

=256

65×8-21:3×7+65

=520-7×7+65

=520-49+65

=471+65

=536

35:5×36+87×10×6-2549

=7×36+870×6-2549

=252+5220-2549

=5472-2549

=2923