256+216
472
1700-725
975
2900 to the nearest 1000
3000
48x2
96
4100+2100
6200
4400-1200
3200
3200 to the nearest 1000
3100
900x2
1800
1900+1500
3400
9090-1200
7890
5980 to the nearest 1000
6000
700x2
1400