Unit 3 Contents

7. Solve 73 4 using expanded form. Choose either Shannon's way or Ming's way to record your work.
8. Solve the following problems by breaking the larger number into tens and ones. Record your work using a sketch like Linda or expanded form like Shannon or Ming.
1. 61 2
2. 47 4
3. 3 91
4. 82 5
5. 4 44
6. 72 5

Check-In: Questions 9–10

9. Solve the following problems using rectangles like Linda or expanded form like Shannon or Ming.
1. 6 21
2. 34 7
10. Choose a problem from Question 9 and find a way to break a factor into two parts to solve the problem using mental math. Show or tell your thinking.

1. Solve the following problems.
1. 60 2
2. 20 6
3. 3 80
4. 8 30
5. 40 9
6. 90 4
7. 8 50
8. 5 80
2. Solve the following problems by breaking the larger number into tens and ones. Record your work using a sketch of a rectangle like Linda did or expanded form like Shannon or Ming.
1. 14 3
2. 3 49
3. 28 4
4. 73 5
5. 6 54
6. 62 7
7. 8 29
8. 33 9
9. 94 2
3. Choose a problem from Question 2 to solve using mental math. Show or tell your mental math strategy.