Addition
25 + 10
35
10, 20, ___, 40, ____, 60, _____
10, 20, 30, 40, 50, 60
76 + 10
86
5, 10, 15, ___, 25, 30, ___
5, 10, 15, 20, 25, 30, 35
98 - 10
88
100, 200, 300, ____, 500
23 - 10
13
2, 4, 6, 8, ___, 12, 14, ___, 18, 20
2, 4, 6, 8, 10, 12, 14, 16, 18, 20
55 + 10
65
10, 20, 30, 40, ___, 60, 70, ____
10, 20, 30, 40, 50, 60, 70, 80