Question

1)139*15+18*139+15*261+18*261=
2)125*48-31*82-31*43+125*83=
3)14,7*13-2*14,7+13*5,3-2*5,3=

Answer 1

1) 13,200
2)3,2831
3)220

Answer 2

139*15 + 18 *139 + 15 * 261 + 18 * 261 = 13200
 
2) 12500

3) 220

Answer 3

1)125 *48 = 6000

Answer 4

2)31*82 = 2542

Answer 5

3)31*43=1333

Answer 6

4)125*83=10.375

Answer 7

5) 6000-2542-1333+10375 = 12500