Abstract 10 ones into a single conceptual object called a ten.
Number and Quantity
Number & Operations in Base Ten: Understand place value.
Reason abstractly and quantitatively.
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Abstract place value reasoning with whole numbers to decimal numbers.
Compose and decompose numbers 11–19 to gain foundations for place value using objects and drawings.
100 can be thought of as a bundle of ten tens — called a “hundred.”
The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).
Abstract individual objects into new conceptual groups.