Question

g) 101 + (–60) + 29 + (–40)

h) 167 + (–252) + 52 + (–67)                   i) 38 – 138 + 250 – 350

 

k) 118 + 107 – (118 – 93) – 50                m) 40 + (139 – 172 + 99) – (139 + 199 – 172)

Answer 1

\(g,101+\left(-60\right)+29+\left(-40\right)=41+29+\left(-40\right)=70+\left(-40\right)=30\)

\(h,167+\left(-252\right)+52+\left(-67\right)=\left(-85\right)+52+\left(-67\right)=\left(-33\right)+\left(-67\right)=-100\)

\(i,38-138+250-350=\left(-100\right)+250-350=150-350=-200\)

\(k,118+107-\left(118-93\right)-50=225-25-50=100-50=50\)

\(m,40+\left(139-172+99\right)-\left(139+199-172\right)=40+\left[\left(-33\right)+99\right]-\left(338-172\right)\)

\(=40+66-166=106-166=-60\)