9 * 4;
5 * 4;
4 * 7;
4 * 8;
24 : 4;
16 : 4;
9 + (14 − 5);
24 − (19 + 4);
37 + 44;
62 − 36.
9 * 4 = 36;
5 * 4 = 20;
4 * 7 = 28;
4 * 8 = 32;
24 : 4 = 6;
16 : 4 = 4;
9 + (14 − 5) = 9 + 9 = 18;
24 − (19 + 4) = 24 − 23 = 1;
37 + 44 = 81;
62 − 36 = 26.