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  • 1150


  • Helps child internalize principle of regrouping for operations
  • Encourages discovery through golden beads or place value blocks
  • For children in grades 1-3
  • Two-way and three-way cardstock matching cards. Organization labels and answer keys included
  • Ten separate exercises with 8 or 10 questions each
Renaming groups of 10 units or 10 tens or 10 hundreds,Introduces regrouping notation for addition and subtraction.Child experiences changing 10 units to a ten, 10 tens to a hundred, and 10 hundreds to a thousand. As in multi-digit subtraction problems, regrouping is sometimes required for some digits but not for others. Problems can also be used as tickets for Montessori "Changing Game". Older children may do as abstract exercise. Hardest exercises are challenging.

Two-way and three-way cardstock matching cards. Organization labels and answer keys included. (Lamination recommended for heavy use; cutting required.)  Recommended Storage (not included): Ten hardware drawers, boxes, or envelopes.

Scope and Sequence Chart (Click here)

The teacher's experience and the sequence of skills in the students' basic math program are the best guides in determining which skills should be introduced first. In general, the scope and sequence chart above can be used as a guide.

A number of sets for younger children are "color coded." Some teachers present all the levels with an exercise set, while others prefer to present all the blue (two-digit) exercises, progress to the pink (three-digit), and culminate with the green (four-digit).

Other skills such as Roman Numerals require no prerequisites other rhan an understanding of place value.  Such exercises can be presented any time.


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