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Substraction Exercise 3

Learn to Substract Digit "1" from numbers between 20 and 30.

If you are proficient in substracting the numbers up to 20 with no mistakes then you are ready to do this exercise.

 

    1.   20 - 1 =
    2.   22 - 1 =
    3.   25 - 1 =
    4.   27 - 1 =
    5.   30 - 1 =
    6.   25 - 1 =
    7.   23 - 1 =
    8.   21 - 1 =
    9.   22 - 1 =
    10.   26 - 1 =
    11.   25 - 1 =
    12.   27 - 1 =
    13.   30 - 1 =
    14.   25 - 1 =
    15.   23 - 1 =
    16.   21 - 1 =
    17.   22 - 1 =
    18.   25 - 1 =
    19.   23 - 1 =
    20.   21 - 1 =
    21.   22 - 1 =
    22.   26 - 1 =
    23.   25 - 1 =
    24.   27 - 1 =
    25.   30 - 1 =
    26.   25 - 1 =
    27.   20 - 1 =
    28.   22 - 1 =
    29.   25 - 1 =
    30.   27 - 1 =
    31.   30 - 1 =
    32.   25 - 1 =
    33.   23 - 1 =
    34.   21 - 1 =
    35.   22 - 1 =
    36.   26 - 1 =
    37.   23 - 1 =
    38.   26 - 1 =
    39.   28 - 1 =
    40.   20 - 1 =
    41.   28 - 1 =
    42.   20 - 1 =
    43.   25 - 1 =
    44.   29 - 1 =
    45.   20 - 1 =
    46.   27 - 1 =
    47.   22 - 1 =
    48.   29 - 1 =
    49.   21 - 1 =
    50.   23 - 1 =

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