In first grade, students define the 1s and 10s places of two-digit numbers. Using place value, students compare two-digit numbers and add numbers up to one hundred. In particular, students gain fluency with adding and subtracting multiples of 10 and adding a one-digit number to a two-digit number. Students use concrete models and visual representations to organize their thinking.
Get information about Common Core Standards.
Determine the place value of a digit based on its position in a number.
Count up to 120.
Perform addition and subtraction.