Simple calculation of 18 △ 2.5 And 5.63 × 6.34 + 0.563 × 36.3 (7.3 + 6.5) × half + 6.2 × half All of them should be simple, and (51 × 2 / 17 + 1.3) △ 3 (the number obtained keeps two decimal places) is not simple 1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + 1 / 30 + 1 / 42

Simple calculation of 18 △ 2.5 And 5.63 × 6.34 + 0.563 × 36.3 (7.3 + 6.5) × half + 6.2 × half All of them should be simple, and (51 × 2 / 17 + 1.3) △ 3 (the number obtained keeps two decimal places) is not simple 1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + 1 / 30 + 1 / 42


18 / 10 * 4 = 7.25.63 × 6.34 + 0.563 × 36.3 = 5.63 × 6.34 + 5.63 × 3.63 = 5.63 (6.34 + 3.63) = 5.63 (10-0.03) = 56.3-0.1689 = 56.1311 (7.3 + 6.5) × half + 6.2 × half = (7.3 + 6.5 + 6.2) × half = 20 × half = 10