1.   Round 162 to the nearest ten.
    A. 170 B. 162
    C. 160 D. 165
    Hint

  2.   Estimate the product of 38 and 7.
    A. 400 B. 280
    C. 210 D. 200
    Hint

  3.   Round 3,120 to the nearest thousand.
    A. 4,000 B. 3,120
    C. 3,100 D. 3,000
    Hint

  4.   Round 485 to the nearest ten.
    A. 480 B. 500
    C. 490 D. 400
    Hint

  5.   Estimate the product of 3,191 and 19.
    A. 6,000 B. 4,000
    C. 50,000 D. 60,000
    Hint