a, 35.18-5.7.28
= 3 5 . 18- 35.28
= 35.( 18-28)
=35.-10
=- 350
b, 45-5(12+9)
= 45-5. 21
= 45-105
=-60
c,24.(16-5)-16(24-5)
=24. 11-16.21
= 264-336
=-72
d, 29.(19-13)-19(29-13)
= 29. 6-19.16
= 174-304
=-130
e, 31.|-18|+31|-81|-31
= 31. 18 + 31. 81-31
= (-31) + 31 . 31 .18.81
= 0 + 45198
=45198
g, | -12|.47+|-12|.52+|-12|
= 12. 47+12.52+12
=12.47+12.52+12.1
= 12. ( 47+ 52+ 1)
= 12.100
= 1200
h, 13.(23+22)-3(17+18)
=13. 47-3. 35
= 611- 105
=506
i, | - 48| + 48. | - 76| + 48. | -21|
= 48 + 48.76+ 48 . 21
= 48.1 + 48.76+ 48.21
= 48. ( 1+ 76+ 21)
= 48. 98
=4704
