004 - Lesson 4 Mastery Check (A7)

Last updated over 5 years ago

6 questions

Note from the author:

1

Last updated over 5 years ago

6 questions

Note from the author:

Subtracting Integers

1

When we model addition, we add integer pieces. What do we do to model subtraction?

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1

1

1

Subtracting Integers

Add yellow pieces until you have enough

Add 3 red pieces

Add zero pairs until you have enough

If you do not have enough integer pieces to take away (for example in the problem 4 -7 = ?), what do you do?

Add yellow pieces until you have enough

Add 3 red pieces

Add zero pairs until you have enough