Embedded Files
In first grade students begin learning about addition and subtraction within 99. They use their knowledge of place value to determine 10 more and 10 less, add multiples of 10, add together a 2-digit and 1-digit number where they sometimes have to regroup, and subtract multiples of ten from other multiples of ten. Please note that the subtraction within 99 content covered in 1st grade is minimal. Included below are several videos that explain how students might solve each problem type using place value understanding.
In first grade students begin learning about addition and subtraction within 99. They use their knowledge of place value to determine 10 more and 10 less, add multiples of 10, add together a 2-digit and 1-digit number where they sometimes have to regroup, and subtract multiples of ten from other multiples of ten. Please note that the subtraction within 99 content covered in 1st grade is minimal. Included below are several videos that explain how students might solve each problem type using place value understanding.
Adding a 2 digit and 1 digit number with regrouping
Adding multiples of ten
Subtracting multiples of 10 from multiples of 10
Report abuse