A) 9.24.25
= 9.6.4.25
= 9.6.(4.25)
= 54.100
=5400
B)12.125.54
= 3.4.125.54
= (4.125) .3.54
= 1000 . 81
= 81000
C)64.125.875
= 8.8.125.875
= ( 8.125).(8.875)
= 1000.7000
= 7000000
D)425.7.4-170.60
= (425.4).7 - 170.10.6
= 1700.7 - 1700.6
= 1700.7 - 1700.6
= 1700 . ( 7-6)
= 1700
E)8.9.14+6+6.17.12+19.4.18
= 2.4.9.14 + 6 + 2.3.17.3.4 + 19.4.2.9
= 2.4.9.14 + 6 + 2.(3.3).17.4 + 19.4.2.9
= ( 2.4.9.14 + 2.9.17.4 + 19.4.2.9) + 6
= [2.4.9 ( 14 + 17 + 19 )] + 6
= [ 2.4.9.50] + 6
= [ ( 4.9).(50.2)] +6
= [ 36 . 100 ] + 6
= 3600 + 6
=3606