8 * (49 − 46);
3 * (21 − 12);
7 * (30 − 28);
40 : 4 * 3;
50 : 5 * 6;
70 : 7 * 9;
1 * 30 : 10;
1 * 60 : 6;
1 * 80 : 10;
0 * 2;
0 * 1;
0 * 3.
8 * (49 − 46) = 8 * 3 = 24;
3 * (21 − 12) = 3 * 9 = 27;
7 * (30 − 28) = 7 * 2 = 14;
40 : 4 * 3 = 10 * 3 = 30;
50 : 5 * 6 = 10 * 6 = 60;
70 : 7 * 9 = 10 * 9 = 90;
1 * 30 : 10 = 30 : 10 = 3;
1 * 60 : 6 = 60 : 6 = 10;
1 * 80 : 10 = 80 : 10 = 8;
0 * 2 = 0;
0 * 1 = 0;
0 * 3 = 0.