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004 - Lesson 4 Mastery Check (A7)

Last updated over 5 years ago

6 questions

Note from the author:

Subtracting Integers

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Question 1

1.

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

Question 2

2.

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

Question 3

3.

Find the difference of the problem below and show ALL your work:

-5 - (-2) =

Question 4

4.

Find the difference of the problem below and show ALL your work:

2 - 4 =

Question 5

5.

Find the difference of the problem below and show ALL your work:

-3 - (-5) =

Question 6

6.

Find the difference:

-2 - (-7) =