3-Digit Addition & Subtraction Worksheet for 8-Year-Olds — 40 Problems

Free worksheet covering multiple subjects for age 8 students. Created with Learning Corner's AI-powered tools.

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Instructions

Solve the addition and subtraction problems below. Write your answer in the space provided under each problem.

 234
+123
 
 451
+328
 
 147
+235
 
 362
+154
 
 581
+249
 
 678
+234
 
 709
+195
 
 456
+345
 
 543
+ 25
 
 628
+ 41
 
 375
+ 18
 
 742
+ 83
 
 869
+ 53
 
 291
+ 39
 
 125
+  4
 
 982
+  7
 
 436
+  8
 
 791
+  9
 
 315
+  5
 
 555
+  6
 
 589
-123
 
 987
-654
 
 345
-128
 
 652
-271
 
 714
-346
 
 800
-432
 
 503
-225
 
 461
-187
 
 187
- 56
 
 298
- 93
 
 463
- 27
 
 825
- 18
 
 511
- 42
 
 305
- 36
 
 768
-  5
 
 342
-  9
 
 650
-  4
 
 200
-  7
 
 913
-  6
 
 101
-  2
 


Answer Key

  1. 357
  2. 779
  3. 382
  4. 516
  5. 830
  6. 912
  7. 904
  8. 801
  9. 568
  10. 669
  1. 393
  2. 825
  3. 922
  4. 330
  5. 129
  6. 989
  7. 444
  8. 800
  9. 320
  10. 561
  1. 466
  2. 333
  3. 217
  4. 381
  5. 368
  6. 368
  7. 278
  8. 274
  9. 131
  10. 205
  1. 436
  2. 807
  3. 469
  4. 269
  5. 763
  6. 333
  7. 646
  8. 193
  9. 907
  10. 99
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