1. 1.367+2.764+(-1.987)=

1) 1.367+2.764+(-1.987)

= 4.131 + (-1.987)

= 2.144

2) (-1.237)-2.001-(-1.251)

= -3.238 – (-1.251)

= -3.238 + 1.251

= -1.987

3) (-2.198)+(-876)-(-1.487)

= -3.074 – (-1.487)

= -3.074 + 1.487

= -1.587

4) 554-(-96)+(-1.726)

= 554 + 96 + (-1.726)

= 650 + (-1.726)

= -1.076

5) 107x(-14)x28

= -1.498 x 28

= -41.944