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Counting on by 2s. What are the missing numbers? 9, 11, 13, ______, _____, 19, 21
15, 17
Counting on by 3s. What is the missing number? 11, 14, _____, _____, 23, 26
17, 20
Counting on by 4s: 20, 24, 28, _____, 36
32
Count on by 2s: 29, 31, 33, _____, ______, 39
35, 37
Count on by 5s: 35, 40, _____, ______, 55, 60
45, 50
Count back by 2s: 19, 17, 15, _____, 11, 9
13
Count back by 2s: 28, 26, 24, ____, _____, 18, 16
22, 20
Count back by ss: 20, 17, 14, ____, 8, 5, 2
11
Count back by 2s: 17, 15, 13, 11, ____, _____, 5, 3, 1
9, 7
Count back by 5s: 25, 20, ____, 10, 5, 0
15
