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Introduction to The Decimal System includes a tray containing nine individual unit beads, nine bars of ten, nine square of hundred and one cube of one thousand.14.5
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TENS BOARDS
SANDPAPER NUMERALS
TRINOMIAL CUBE
HIERARCHICAL TRINOMIAL CUBE
HUNDRED BOARD
SMALL WOODEN NUMBER CARDS 1-9000
SPINDLE BOX
POWER OF TWO CUBE
SUBTRACTION STRIP BOARD
NUMBER RODS
SMALL NUMERICAL RODS
PRINTED NUMERALS WITH BOX
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