Adding
Subtracting
Counting Forward
Counting Backward
Hundreds Chart
100
14 + 10 =
24
100
20 - 10 =
10
100
10, 20, 30, ______
40
100
50, 40, 30, ______
20
100
Do we move up or down to add ten to a number?
Down
200
10 + 30 =
40
200
27 - 10 =
17
200
4, 14, 24, ______
34
200
55, 45, 35, _____
25
200
Do we move up or down to subtract ten, or find ten less?
Up
300
25 + 20 =
45
300
50 - 20 =
30
300
56, 66, 76, _____
86
300
89, 79, 69, _____
59
300
Do we move left or right to find one more than a number?
Right
400
67 + 30 =
97
400
70 - 60 =
10
400
45, ____, 65, 75
55
400
49, 39, 29, 19, _____
9
400
To add 40 to a number, we move down _____ spaces.
4
500
40 + 37 =
77
500
90 - 30 =
60
500
64, 74, 84, _____
94
500
66, _____
56
500
What number is below the number 83?
93
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