1.   Estimate the difference to the nearest ten. 626 − 187
    A. 440 B. 400
    C. 430 D. 450
    Hint

  2.   Estimate the difference to the nearest ten. 298 − 108
    A. 180 B. 200
    C. 190 D. 170
    Hint

  3.   Estimate the difference to the nearest hundred. 626 − 187
    A. 400 B. 600
    C. 700 D. 500
    Hint

  4.   Estimate the difference to the nearest hundred. 523 − 491
    A. 80 B. 100
    C. 0 D. 90
    Hint

  5.   Estimate the difference to the nearest hundred. 769 − 335
    A. 300 B. 500
    C. 600 D. 400
    Hint