Lesson: Subtracting by Breaking Apart Tens and Ones Mathematics • 2nd Grade
In this lesson, we will learn how to subtract a 2-digit number from a 2-digit number by breaking one number apart and subtracting tens then ones.
Isabella is subtracting 27 from 53.
She breaks apart 27 so she can take away in three easy steps.
First, she took away the tens. What number did she get?
Then, she took away the ones. Help her finish the calculation.
What is ?
We can use place value cards to help us subtract groups of 10.
49 is made up of 4 tens and 9 ones.
Subtract groups of ten to find the answer.
Consider the following subtraction expression:
Which of the following models represents that expression?