Common Core MATH 1 NBT 2c Grade 1 Number And Operations In Base Ten Understand Place Value

Number And Operations In Base Ten: Understand Place Value.

The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

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• Tens and Ones
• Place Value Blocks (2-Digit)