980 − 80 − 100 = 900 − 100 = 800;
640 − 40 + 200 = 600 + 200 = 800;
290 + 70 = 360;
680 + 50 = 730;
140 * 6 = 840;
260 * 3 = 780;
480 : 6 = 80;
360 : 9 = 40.
Условие:
980 − 80 − 100;
640 − 40 + 200;
290 + 70;
680 + 50;
140 * 6;
260 * 3;
480 : 6;
360 : 9.
980 − 80 − 100 = 900 − 100 = 800;
640 − 40 + 200 = 600 + 200 = 800;
290 + 70 = 360;
680 + 50 = 730;
140 * 6 = 840;
260 * 3 = 780;
480 : 6 = 80;
360 : 9 = 40.