Base Ten Riddles
(from page 188 in Elementary and Middle School Mathematics by John A. Van De Walle; Pearson Education, Boston, 2004)

        Base-ten riddles can be presented orally or in written form. In either case, children should use
    base-ten materials to help solve them. the examples here illustrate a variety of possibilities with
    different levels of difficulty.


    I have 23 ones and 4 tens. Who am I?

    I have 4 hundreds, 12 tens, and 6 ones. Who am I?

    I have 30 ones and 3 hundreds. Who am I?

    I am 45. I have 25 ones. How many tens do I have?

    I am 341. I have 22 tens. How many hundreds do I have?

    I have 13 tens, 2 hundreds, and 21 ones.

    If you put 3 more tens with me, I would be 115. Who am I?

    I have 17 ones. I am between 40 and 50. Who am I?

    I have 17 ones. I am between 40 and 50. How many tens do I have?
 

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