(1)740-15×16
=740-240
=500;
(2)(135+75)÷(14×5)
=210÷70
=3;
(3)(135+415)÷5+16
=550÷5+16
=110+16
=126;
(4)4×17×25
=4×25×17
=100×17
=1700;
(5)119+58+81+42
=(119+81)+(42+58)
=200+100
=300;
(6)32×125
=4×(8×125)
=4×1000
=4000;
(7)357-48-52
=357-(48+52)
=357-100
=257;
(8)1280÷16÷8
=1280÷(16×8)
=1280÷128
=10;
(9)125×6-25×6
=(125-25)×6
=100×6
=600.