use compatible numbers to estimate each difference 84-36
31.8966
330 + 60 = 390
You could use 250 and 750.
600 - 250 = 350
use compatible numbers to estimate each difference 84-36
80+30
83+34
50.0000.000
31.8966
230 + 670 = 900
ghgfhnhn
76.8298
330 + 60 = 390
5.6261
35000 ÷ 70 = 500
Not in this case.