1.   Find the difference.

9 tens − 3 tens = ___ tens

    A. 7 B. 4
    C. 5 D. 6
    Hint

  2.   Find the difference.

6 tens − 4 tens = ___ tens

    A. 3 B. 1
    C. 2 D. 0
    Hint

  3.   Find the difference.

80 − 20 = ___

    A. 60 B. 70
    C. 50 D. 40
    Hint

  4.   Find the difference.

40 − 10 = ___

    A. 30 B. 20
    C. 0 D. 10
    Hint

  5.   Find the difference.

50 − 20 = ___

    A. 20 B. 40
    C. 30 D. 10
    Hint