Mathematics

Question

Which is a good comparison of the estimated sum and the actual sum of 7 7/8 and 2 11/12?

1 Answer

  • 7/8 is nearly 1.

    11/12 is also nearly 1.

    Estimate:

    7+7/8+2+11/12≈7+1+2+1≈11

    Real Answer:

    7+7/8+2+11/12

    =9+7/8+11/12

    =72/8+7/8+11/12

    =79/8+11/12

    =948/96+88/96

    =1036/96

    =960/96+76/96

    =10+76/96