280 + 500 = 780
That equals 559. If you have to, estimate 210 + 350 = 560
Not in this case.
8000 + 3000 = 11000
209
14200
94
300 + 60
100+500=600
That equals 559. If you have to, estimate 210 + 350 = 560
Not in this case.
301
80+30
120+80
83+34
330 + 60 = 390
30+600+630
650 + 290 = 940