26 + 17 + 3; 45 − 20 − 9; 65 − 60 + 95; 37 + 8 + 22; 1 * 7 * 10 − 25; 0 * 3 * 10 + 40.
26 + 17 + 3 = 26 + (17 + 3) = 26 + 20 = 46; 45 − 20 − 9 = 25 − 9 = 16; 65 − 60 + 95 = 5 + 95 = 100; 37 + 8 + 22 = 37 + (8 + 22) = 37 + 30 = 67; 1 * 7 * 10 − 25 = 70 − 25 = 45; 0 * 3 * 10 + 40 = 0 + 40 = 40.