Numbers 1 to 100

Numbers 1 to 100 🔢

Numbers help us count, measure, and understand the world around us!

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Numbers 1 to 10

Number	Word	Show it!
1	One	⭐
2	Two	⭐⭐
3	Three	⭐⭐⭐
4	Four	⭐⭐⭐⭐
5	Five	⭐⭐⭐⭐⭐
6	Six	⭐⭐⭐⭐⭐⭐
7	Seven	⭐⭐⭐⭐⭐⭐⭐
8	Eight	⭐⭐⭐⭐⭐⭐⭐⭐
9	Nine	⭐⭐⭐⭐⭐⭐⭐⭐⭐
10	Ten	⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐

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Numbers 11 to 20

Number	Word
11	Eleven
12	Twelve
13	Thirteen
14	Fourteen
15	Fifteen
16	Sixteen
17	Seventeen
18	Eighteen
19	Nineteen
20	Twenty

Tip: 13–19 all end in “teen”!

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Numbers 21 to 100

Tens

Number	Word
10	Ten
20	Twenty
30	Thirty
40	Forty
50	Fifty
60	Sixty
70	Seventy
80	Eighty
90	Ninety
100	One Hundred

In Between

For numbers like 21–99, combine the tens and units:

• 21 = Twenty-one
• 35 = Thirty-five
• 47 = Forty-seven
• 68 = Sixty-eight
• 99 = Ninety-nine

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Count by 2s (Even Numbers)

2, 4, 6, 8, 10, 12, 14, 16, 18, 20…

These are called even numbers — they can be divided by 2!

Pattern: All even numbers end in 0, 2, 4, 6, or 8.

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Count by 5s

5, 10, 15, 20, 25, 30, 35, 40, 45, 50…

Pattern: All multiples of 5 end in 0 or 5.

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Count by 10s

10, 20, 30, 40, 50, 60, 70, 80, 90, 100!

Pattern: All multiples of 10 end in 0.

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Odd and Even Numbers

Odd Numbers	Even Numbers
End in 1, 3, 5, 7, 9	End in 0, 2, 4, 6, 8
Cannot be split equally	Can be split equally
1, 3, 5, 7, 9, 11…	2, 4, 6, 8, 10, 12…

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Place Value: Tens and Units

Every two-digit number has a tens place and a units (ones) place:

Number	Tens	Units
35	3 tens (30)	5 units (5)
47	4 tens (40)	7 units (7)
92	9 tens (90)	2 units (2)
18	1 ten (10)	8 units (8)

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Before and After

Before	Number	After
4	5	6
14	15	16
29	30	31
49	50	51
99	100	—

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Greater Than and Less Than

Use > (greater than) and < (less than):

• 8 > 5 (8 is greater than 5)
• 3 < 7 (3 is less than 7)
• 10 = 10 (equal)

Memory trick: The open mouth 🐊 always eats the bigger number!

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Ordering Numbers

Ascending Order (smallest to largest)

3, 7, 12, 25, 40, 68, 91

Descending Order (largest to smallest)

91, 68, 40, 25, 12, 7, 3

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Practice Activities

Count and Write

Count the objects and write the number: 🌟🌟🌟🌟🌟🌟🌟 = ___ (7)

Fill in the Missing Numbers

25, 26, ___, 28, ___, 30 (27, 29)

50, ___, 70, ___, 90 (60, 80)

Write in Words

• 14 = ___ (Fourteen)
• 37 = ___ (Thirty-seven)
• 52 = ___ (Fifty-two)
• 88 = ___ (Eighty-eight)

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Numbers are the language of mathematics — practice them every day! 🌟