Thursday, January 30, 2014

Think Time: Abacus Beads

 
This diagram shows a simple abacus with nine beads representing the number 324.

a. If there are twenty beads and all must be used, what is the largest number that can be represented?

b. What is the smallest number that can be represented?

c. If there are almost the same number of beads on each column, what numbers can be represented?
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2 comments:

  1. AnonymousMarch 26, 2014 at 2:13 PM

    Ebony
    a. the lugest number you can represent is 992
    b. smallest amont you can make is 299
    c. all of the numbers you can make is 299, 992, 929

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    Replies
    1. Angela ClarkeMarch 29, 2014 at 10:17 PM

      If there are almost the same number of beads on each column, what numbers can be represented?

      Delete

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