1) 630 * 134 =
630
x 134
------
2520
1890
+630
--------
84420
2) 346 * 305 =
346
x 305
------
1730
+1038
--------
105530
3) 806 * 305 =
806
x 305
------
4030
+2418
--------
245830
4) 590 * 250 =
590
x 250
------
000
2950
+1180
--------
147500
Ответ: 630 * 134 = 84420; 346 * 305 = 105530; 806 * 305 = 245830; 590 * 250 = 147500