UNIT 06 // SESSION A // MASTER WHEN READY

Count up, or work it down?

Name:Date:

1Count up. The numbers are close together.

52 minus 47  →  start at 47: 48, 49, 50, 51, 52  →  that is 5 jumps.

34 minus 29 =
61 minus 58 =
100 minus 96 =
45 minus 38 =
73 minus 69 =
80 minus 74 =

2These are far apart, so use the written method.

52
− 27
63
− 28
81
− 36
94
− 47

3You decide. Write C for count up, or W for the written method. Then solve it.

52 minus 49     =
84 minus 27     =
61 minus 58     =
73 minus 36     =
40 minus 37     =
95 minus 48     =

4Explain your choice. Why did you count up for one and write out another?

1. 5, 3, 4, 7, 4, 6   2. 25, 35, 45, 47   3. C 3, W 57, C 3, W 37, C 3, W 47