1.   Find the difference.

    A. 50 B. 49
    C. 47 D. 48
    Hint

  2.   Find the difference.

    A. 58 B. 60
    C. 56 D. 54
    Hint

  3.   A can holds three tennis balls. How many cans do you need if you want 18 tennis balls?
    A. 6 B. 15
    C. 5 D. 3
    Hint

  4.   Round $1,621 to its greatest place value.
    A. $2,000 B. $1,600
    C. $1,700 D. $1,620
    Hint

  5.   Round 67,141 to its greatest place value.
    A. 68,000 B. 67,100
    C. 67,000 D. 70,000
    Hint