If I want to ADD 10, do I move up or down on the hundred chart?
DOWN! The numbers get bigger as you move down on the hundred chart.
If I want to SUBTRACT/TAKE AWAY 10, do I move up or down on the hundred chart?
UP! The numbers get smaller as you move up on the hundred chart.
Use the hundred chart to help you add: 37 + 20 = ?
37 + 20 = 57
Move down 2 spaces to add 2 tens (20).
Use the hundred chart to help you subtract: 42 - 30 = ?
42 - 30 = 12
Move up 3 spaces to take away 3 tens (30).
If I want to ADD 1, do I move left or right on the hundred chart?
Right
If I want to SUBTRACT/ TAKE AWAY 1, do I move left or right on the hundred chart?
Left
Use the hundred chart to help you subtract 45 - 13
32
Use the hundred chart to help you subtract 98 - 45
53
Use the hundred chart to help you subtract 63 - 47
16
Use the hundred chart to help you subtract 54 - 29
25
Use the hundred chart to help you add 37 + 63
100
Use the hundred chart to help you add 45 + 45
90
Use the hundred chart to help you add 29 + 70
99
Use the hundred chart to help you add 13 + 65
78
