6th Grade Order of Operations Worksheets - Free Printable

To solve this subtraction worksheet, we need to find the missing number in each equation. Since these are subtraction problems with a missing part, we can use addition to help us — because if you know that:

> A – B = C
Then it also means:
> A = B + C

So for any problem like “___ – 223 = 600”, we just add 223 and 600 together to get the answer.

Let’s go one by one carefully:

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1. ___ – 223 = 600
→ Add 223 + 600 = 823

2. 7,676 – ___ = 7,537
→ Subtract: 7,676 – 7,537 = 139

3. ___ – 521 = 1,300
→ Add: 1,300 + 521 = 1,821

4. 9,347 – ___ = 9,125
→ Subtract: 9,347 – 9,125 = 222

5. 3,899 – 853 = ___
→ Just subtract: 3,899 – 853 = 3,046

6. ___ – 237 = 262
→ Add: 262 + 237 = 499

7. 133 – 118 = ___
→ Subtract: 133 – 118 = 15

8. 3,386 – 631 = ___
→ Subtract: 3,386 – 631 = 2,755

9. ___ – 342 = 2,127
→ Add: 2,127 + 342 = 2,469

10. 815 – 266 = ___
→ Subtract: 815 – 266 = 549

11. ___ – 383 = 769
→ Add: 769 + 383 = 1,152

12. 4,977 – 92 = ___
→ Subtract: 4,977 – 92 = 4,885

13. 5,304 – ___ = 4,915
→ Subtract: 5,304 – 4,915 = 389

14. 1,784 – ___ = 1,538
→ Subtract: 1,784 – 1,538 = 246

15. 2,857 – 106 = ___
→ Subtract: 2,857 – 106 = 2,751

16. ___ – 304 = 5,167
→ Add: 5,167 + 304 = 5,471

17. ___ – 567 = 8,458
→ Add: 8,458 + 567 = 9,025

18. 5,718 – ___ = 5,383
→ Subtract: 5,718 – 5,383 = 335

19. ___ – 341 = 9,686
→ Add: 9,686 + 341 = 10,027

20. 15 – 92 = ___
Wait — this is tricky! 15 minus 92? That gives a negative number:
15 – 92 = -77

But since this is likely a worksheet for younger students who may not have learned negatives yet, let’s double-check — maybe it was meant to be “92 – 15”? But as written, it’s 15 – 92.

We’ll go with what’s written: -77

*(Note: If this is an error in the worksheet, it might be intended as 92 - 15 = 77 — but unless told otherwise, we solve as given.)*

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Now, compiling all answers in order:

Final Answer:
[823, 139, 1821, 222, 3046, 499, 15, 2755, 2469, 549, 1152, 4885, 389, 246, 2751, 5471, 9025, 335, 10027, -77]