# Subtraction With the Stamp Game

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Subtraction With the Stamp Game
Math - Arithmetical Operations
Level Primary
Age 5+
Prerequisites Understanding of Decimal System
Materials Stamp Game Box
pencil
green pencil
blue pencil
red pencil

This activity teaches the child to do subtraction problems at a higher level of abstraction.

## Presentations

### Static Subtraction

1. Take the material to a table. No divider line is needed for subtraction.
2. Write out the problem.
3. Lay out the stamps for the first number (the minuend).
4. Slide down the unit stamps for the second number (the subtrahend). Record the amount of unit stamps still left at the top.
Then do the same for the tens, then the hundreds, then the thousands.

### Dynamic Subtraction

1. step one
2. step two, etc.

## Material

Absorbent Montessori \$47.00
Affordable Montessori \$29.00
Albanesi \$142.00
Alison's \$35.00
Bruins \$89.00
E & O \$48.00
ETC Montessori \$89.00
IFIT \$25.00
Juliana Group \$117.18
Jump Start \$14.24
Material Company of Boston \$78.00
Mindset \$113.66
Mindset \$44.46
Montessori Concepts \$22.00
Montessori N' Such \$50.00
Montessori Outlet \$26.95
Montessori Stores \$98.00
Nienhuis \$97.70
Thinkamajigs \$31.95
merocomontessori \$30.1 (Stamp Game With box)

Decimal Stamp Game Sets
Alison's \$45.00
Mindset \$71.84
Nienhuis \$97.70