Question

.急..5.6×69.32＋138.64×0.05＋693.2×0.43

Answer 1

5.6×69.32＋138.64×0.05＋693.2×0.43

=5.6×69.32＋69.32×2×0.05＋69.32×4.3

=69.32×(5.6+2×0.05+4.3)

=69.32×10

=693.2