0.9 + 1.9 + 29.9 + 399.9 + 49999.9

0.9 + 1.9 + 29.9 + 399.9 + 49999.9


0.9 + 1.9 + 29.9 + 399.99 + 49999.9 = (0.9 + 0.1 - 0.1) + (1.9 + 0.1 - 0.1) + (29.9 + 0.1 - 0.1) + (399.9 + 0.1 - 0.1) + (499.9 + 0.1 - 0.1) = (1 - 0.1) + (2 - 0.1) + (30 - 0.1) + (400 - 0.1) + (5000 - 0.1) + (1 + 2 + 30 + 400 + 5000 + 0..



어떻게


23 - 17 = 6
37 - 23 = 14
57 - 37 = 20
14 - 6 = 8
20 - 14 = 6
c - 20 = 4
c = 24
정 답 은 57 + 24 = 91.



6.17 × 41.9 + 6.71 × 57.1 + 6.71 은 어떻게 계산 합 니까?


6.17 × 41.9 + 6.71 × 57.1 + 6.71 = (6.71 - 0.54) x41.9 + 6.71 × 57.1 + 6.71 x1 = 6.71x 41.9 - 0.54 x 41.9 + 6.71 x 57.1 + 6.71 x 1 = (41.9 + 57.1) x6.71 - 0.54 x 41.9 = 100 x 6.71 - 0.54 x 41.9 = 671 - 2.626 = 648.374