The user has provided a math worksheet with several arithmetic problems. The task is to extract and represent these problems in a structured format, likely for processing or display.

Arithmetic Problems:

• 730 + [blank] = 581
• 619 - [blank] = 849
• 730 + [blank] = 574
• 156 + [blank] = 615
• 640 - [blank] = 275
• [blank] + 33 = 777
• 232 - [blank] = 127
• 76 + [blank] = 201
• 778 - [blank] = 564
• [blank] + 53 = 56
• 64 + [blank] = 605
• 573 + [blank] = 927
• 784 - [blank] = 362
• [blank] + 897 = 998
• 141 - [blank] = 155
• 16 + [blank] = 72
• 928 - [blank] = 563
• [blank] + 200 = 496
• 748 + [blank] = 857
• 483 - [blank] = 428
• [blank] + 444 = 582
• 402 - [blank] = 279
• 624 + [blank] = 880
• 146 - [blank] = 29
• [blank] + 502 = 862
• 226 - [blank] = 524
• 238 + 698 = [blank]
• 447 + 554 = [blank]
• 473 + 878 = [blank]
• 77 + 652 = [blank]
• 87 + 942 = [blank]
• 516 + 303 = [blank]
• 355 + 819 = [blank]
• 938 - [blank] = [blank]