Arithmetic Grade Four

Lesson One hundred and thirty-four: Rounding and Dividing

Here's another example:

Now take a look at these examples. 


    PROBLEM: 885 / 31 = 

    STRATEGY: round divisor to nearest 10, dividend to nearest 100
              and forget about the remainder.

    ROUNDED PROBLEM: 800 / 30 = 26

    The actual answer to this problem is 28 r17 which isn't too far
    away from our rounded answer.

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