Add and subtract three-digit numbers with Springling and Minni and Subbi.

Students use place value and expanded form to subtract 3-digit numbers. Students apply phonics skills to learn about the preconsonantal nasal -ng and the strategy of a KWL chart. Students use ...

If you can subtract two 3-digit numbers from each other, then you can use the same method to subtract two 4-digit numbers. You use the same method, no matter how many digits are in the numbers.

Mentally adding and subtracting multiples of 100, 10 or 1 to a 3-digit number. Comparing different ways of representing 3-digit numbers. Unconditional probability.