Explicație pas cu pas:
342 + 8 x 5=342+40=382
2x3 + 69 =6+69=75
619 + 7 x 7 =619+49=668
5x7 - 24 =35-24=9
1 000 - 10 x 8 =1000-80=9920
10 x 7 + 285 =70+285=355
764-7x8 =764-56=708
9x3+ 7 x 2 + 10 x 4 =27+14+40=41+40=81
10 x 10 - 3 x 6 + 5 x 2 =100-18+10=82+10=92
9+3x5-2x4-3x3 =9+15-8-9=24-8-9=16-9=7
154+10x6-6x4-8x9 =154+60-24-72=214-24-72=190-72=118
2x3x5x1-4x4x1x0=6x5x1-16x1x0=30x1-16x0=30-0=30