That equals 559. If you have to, estimate 210 + 350 = 560
210 + 350 = 560
100 That is an estimate.
301
80+30
83+34
300 + 60
120+80
94
To estimate a number you round it up to easier number so 387 would be 400. 945 would be 950 and 1024 would be 1030. so 400 and 950 would be 1350 plus 1030 equals 2380 you could even round it up easier so 400 plus 900 and 1000 equals 2300
290 plus 500
650 + 290 = 940