Mixed Addition and Subtraction math worksheet with 24 problems and a cow graphic.

Let’s solve each problem step by step. We’ll go row by row, left to right.

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Row 1:

1. 487 + 378
400 + 300 = 700
80 + 70 = 150 → 700 + 150 = 850
7 + 8 = 15 → 850 + 15 = 865

2. 567 - 315
567 - 300 = 267
267 - 15 = 252

3. 445 + 238
400 + 200 = 600
40 + 30 = 70 → 670
5 + 8 = 13 → 670 + 13 = 683

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Row 2:

4. 576 + 399
576 + 400 = 976 → minus 1 = 975

5. 721 - 229
721 - 200 = 521
521 - 29 = 492 → 492

6. 379 + 125
300 + 100 = 400
70 + 20 = 90 → 490
9 + 5 = 14 → 490 + 14 = 504

7. 274 + 670
200 + 600 = 800
70 + 70 = 140 → 940
4 + 0 = 4 → 944

8. 564 - 385
564 - 300 = 264
264 - 85 = 179 → 179

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Row 3:

9. 243 + 327
200 + 300 = 500
40 + 20 = 60 → 560
3 + 7 = 10 → 560 + 10 = 570

10. 554 - 227
554 - 200 = 354
354 - 27 = 327 → 327

11. 345 + 206
300 + 200 = 500
40 + 0 = 40 → 540
5 + 6 = 11 → 540 + 11 = 551

12. 769 - 378
769 - 300 = 469
469 - 78 = 391 → 391

13. 448 + 227
400 + 200 = 600
40 + 20 = 60 → 660
8 + 7 = 15 → 660 + 15 = 675

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Row 4:

14. 458 + 188
400 + 100 = 500
50 + 80 = 130 → 630
8 + 8 = 16 → 630 + 16 = 646

15. 636 - 145
636 - 100 = 536
536 - 45 = 491 → 491

16. 758 - 359
758 - 300 = 458
458 - 59 = 399 → 399

17. 150 + 177
100 + 100 = 200
50 + 70 = 120 → 320
0 + 7 = 7 → 327

18. 811 - 176
811 - 100 = 711
711 - 76 = 635 → 635

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Row 5:

19. 521 + 275
500 + 200 = 700
20 + 70 = 90 → 790
1 + 5 = 6 → 796

20. 555 - 285
555 - 200 = 355
355 - 85 = 270 → 270

21. 347 + 178
300 + 100 = 400
40 + 70 = 110 → 510
7 + 8 = 15 → 510 + 15 = 525

22. 387 - 178
387 - 100 = 287
287 - 78 = 209 → 209

23. 256 + 201
200 + 200 = 400
50 + 0 = 50 → 450
6 + 1 = 7 → 457

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Row 6:

24. 605 + 306
600 + 300 = 900
0 + 0 = 0
5 + 6 = 11 → 900 + 11 = 911

25. 310 - 178
310 - 100 = 210
210 - 78 = 132 → 132

26. 544 - 178
544 - 100 = 444
444 - 78 = 366 → 366

27. 544 + 222
500 + 200 = 700
40 + 20 = 60 → 760
4 + 2 = 6 → 766

28. 766 - 377
766 - 300 = 466
466 - 77 = 389 → 389

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Final Answer:

865
252
683
975
492
504
944
179
570
327
551
391
675
646
491
399
327
635
796
270
525
209
457
911
132
366
766
389