Here are some Subtraction questions
S1. 7853.7 - 845.6

S2. 68765 - 10536.5

S3. 7973 - 7853

S4. 12446.23 - 765.4

S5. 5267.2 - 1623

S6. 8623 - 274.7

S7. 67267 - 2662

S8. 2389 - 1851.4

S9. 2372.5 - 1572.5

S10. 6826 - 262.276

S11. Bonus:
571662.84 - 78265.26
S12. 6762.8 - 5723

S13. 57826.4 - 38253.7

S14. 194.9 - 538.8

S15. 1952 - 392.93

S16. 36935.8 - 2925.75

S17. 2994.3 - 1883.9

S18. 5286.96 - 6836.4

S19. 15938 - 5381.97

S20. 93365.1 - 11573.73

S21. 462.752 - 283.1

S22. Bonus:
111682.688 - 113526.955