600-89=511
415+279=694
506-49=457
145+329=474
1000-597=403
455+196=651
458+349=807
172-49=123
951-89=862
750-352=398
458+442=900
49+486=535
458+196=654
600-89=511
415+279=694
506-49=457
145+329=474
1000-597=403
455+196=651
458+349=807
172-49=123
951-89=862
750-352=398
458+442=900
172-49=123
951-89=862
750-352=398
600-89=511
415+279=694
49+486=535
506-49=457
145+329=474
1000-597=403
455+196=651
458+196=654
458+349=807
458+442=900