Evaluate $-5+4+3$−5+4+3.
Evaluate $-3+5-7$−3+5−7.
Evaluate $5+9\times\left(-6\right)$5+9×(−6).
Evaluate $\left(-4+2\right)\times6$(−4+2)×6.
Carry out the four operations with rational numbers and integers, using efficient mental and written strategies and appropriate digital technologies and make estimates for these computations