16) -40
17) -2
18) -5
19) -10
That’s all.
Its a lot easier to do 1.200 - .200. Than to do 1.248- .239. How I see it, estimating always gives you something to fall back on or to help see if your exact answer is accurate
Step-by-step explanation:
AuB={3,4,7,9}U{8,9,10,11}
"I should stop setting up for bad jokes..."
or "Fishin' ships are pretty good..."
