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  Math Mats: Operations & Algebraic Thinking (Subtraction) - Summer Theme (grade 1)
Math Mats - Subtraction - Operations & Algebraic Thinking - 1st Grade - preview 1
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Eight colorful math mats and cards for practice in grouping
numbers into tens and ones, and using place value to count, compare, add
and subtract. Printable manipulatives are included or you can use real items.

CCSS.Math.Content: 1.NBT.A.1, B.2-3, C.4-6

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