← Back to lesson·Advance A · W2 D5 · 3 drill sections · ~6 min

Advance A · Week 2 · Addition & Subtraction Mastery

Day 5 Practice Worksheet — Making Change Quickly

Applying complements to real cash transactions.

Goal · 50 mixed +/− problems

Name
Date
Score

  1. §1Complement to 100

    ⏱ 2 min · 20 problems

    Timed drill — start a 2-minute timer, then solve in order. Goal: finish under time with full accuracy.

    1. 01.Complement of 79 to 100=
    2. 02.Complement of 89 to 100=
    3. 03.Complement of 15 to 100=
    4. 04.Complement of 13 to 100=
    5. 05.Complement of 35 to 100=
    6. 06.Complement of 92 to 100=
    7. 07.Complement of 14 to 100=
    8. 08.Complement of 4 to 100=
    9. 09.Complement of 68 to 100=
    10. 10.Complement of 79 to 100=
    11. 11.Complement of 44 to 100=
    12. 12.Complement of 87 to 100=
    13. 13.Complement of 31 to 100=
    14. 14.Complement of 28 to 100=
    15. 15.Complement of 21 to 100=
    16. 16.Complement of 43 to 100=
    17. 17.Complement of 2 to 100=
    18. 18.Complement of 23 to 100=
    19. 19.Complement of 12 to 100=
    20. 20.Complement of 64 to 100=

  2. §2Mixed addition

    ⏱ 2 min · 20 problems

    Timed drill — start a 2-minute timer, then solve in order. Goal: finish under time with full accuracy.

    1. 01.41 + 85=
    2. 02.36 + 67=
    3. 03.36 + 80=
    4. 04.14 + 43=
    5. 05.16 + 50=
    6. 06.36 + 29=
    7. 07.78 + 52=
    8. 08.30 + 97=
    9. 09.71 + 97=
    10. 10.23 + 15=
    11. 11.65 + 14=
    12. 12.60 + 99=
    13. 13.68 + 76=
    14. 14.27 + 53=
    15. 15.34 + 92=
    16. 16.38 + 44=
    17. 17.51 + 58=
    18. 18.81 + 45=
    19. 19.59 + 29=
    20. 20.22 + 45=

  3. §3Mixed subtraction

    ⏱ 2 min · 20 problems

    Timed drill — start a 2-minute timer, then solve in order. Goal: finish under time with full accuracy.

    1. 01.29 − 24=
    2. 02.95 − 22=
    3. 03.57 − 19=
    4. 04.54 − 16=
    5. 05.86 − 68=
    6. 06.61 − 10=
    7. 07.26 − 26=
    8. 08.61 − 15=
    9. 09.42 − 18=
    10. 10.74 − 72=
    11. 11.57 − 21=
    12. 12.61 − 26=
    13. 13.25 − 14=
    14. 14.50 − 29=
    15. 15.68 − 14=
    16. 16.67 − 67=
    17. 17.75 − 18=
    18. 18.30 − 27=
    19. 19.55 − 28=
    20. 20.34 − 29=

Answer Key

§1 · Complement to 100

  1. 1.21
  2. 2.11
  3. 3.85
  4. 4.87
  5. 5.65
  6. 6.8
  7. 7.86
  8. 8.96
  9. 9.32
  10. 10.21
  11. 11.56
  12. 12.13
  13. 13.69
  14. 14.72
  15. 15.79
  16. 16.57
  17. 17.98
  18. 18.77
  19. 19.88
  20. 20.36

§2 · Mixed addition

  1. 1.126
  2. 2.103
  3. 3.116
  4. 4.57
  5. 5.66
  6. 6.65
  7. 7.130
  8. 8.127
  9. 9.168
  10. 10.38
  11. 11.79
  12. 12.159
  13. 13.144
  14. 14.80
  15. 15.126
  16. 16.82
  17. 17.109
  18. 18.126
  19. 19.88
  20. 20.67

§3 · Mixed subtraction

  1. 1.5
  2. 2.73
  3. 3.38
  4. 4.38
  5. 5.18
  6. 6.51
  7. 7.0
  8. 8.46
  9. 9.24
  10. 10.2
  11. 11.36
  12. 12.35
  13. 13.11
  14. 14.21
  15. 15.54
  16. 16.0
  17. 17.57
  18. 18.3
  19. 19.27
  20. 20.5