When you count, you are finding how many of something you have. You use numbers to show how many.

**To better understand reading & writing numbers to 100…**

## LET’S BREAK IT DOWN!

### Count jumping jacks to 20.

You are doing jumping jacks. You can count to find how many you have done. 1, 2, 3, 4, 5, 6, 7, 8, 9. After 9, all of the numbers start with a 1: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19.

### Count jumping jacks to 100.

You can count all the way to 100.

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

51 52 53 54 55 56 57 58 59 60

61 62 63 64 65 66 67 68 69 70

71 72 73 74 75 76 77 78 79 80

81 82 83 84 85 86 87 88 89 90

91 92 93 94 95 96 97 98 99 100

### Count sit-ups by 10s.

Counting is fun but counting to 100 takes a while. You can count faster by counting 10 at a time. Count by 10s: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100.

### There is a pattern in numbers.

All of the 20s start with 2, like 20 and 25. All of the 30s start with 3, like 30 and 37. There is a pattern in how you write numbers!

### Count on to count cookies.

You can count on from any number. You have 55 cookies. Count on from 55 to 61: 55, 56, 57, 58, 59, 60, 61.