Whole Numbers and Cardinal Numbers: 10 to 99

Numbers from 11 through 19 are:

11 eleventh

Chocolate Box DarkOrchid Box DarkMagenta Box OliveDrab Box CornflowerBlue Box Indigo Box Cyan Box Thistle Box Yellow Box RoyalBlue Box MediumOrchid Box

12 twelth

MediumOrchid Box DarkBlue Box DeepSkyBlue Box DarkKhaki Box SlateBlue Box GreenYellow Box MediumBlue Box Coral Box Orchid Box SpringGreen Box MediumSpringGreen Box Lavender Box

13 thirteenth

Lavender Box Wheat Box MediumSeaGreen Box Violet Box Khaki Box DodgerBlue Box SandyBrown Box BurlyWood Box DarkOrange Box MediumAquamarine Box Peru Box Brown Box DarkGreen Box

14 fourteenth

DarkGreen Box SteelBlue Box Green Box Pink Box Goldenrod Box Blue Box Teal Box MediumTurquoise Box Aqua Box SkyBlue Box Plum Box Chartreuse Box DarkTurquoise Box SaddleBrown Box

15 fifteenth

BlueViolet Box SeaGreen Box Tan Box RosyBrown Box MediumPurple Box DarkSeaGreen Box Maroon Box DarkViolet Box MediumSlateBlue Box Olive Box LimeGreen Box CadetBlue Box DeepPink Box Purple Box MidnightBlue Box

16 sixteenth

YellowGreen Box Aquamarine Box DarkGoldenrod Box Fuchsia Box Gold Box PowderBlue Box DarkCyan Box DarkSlateBlue Box Turquoise Box HotPink Box LawnGreen Box Empty Box ForestGreen Box ForestGreen Box ForestGreen Box ForestGreen Box

17 seventeenth

DarkSlateBlue Box Olive Box HotPink Box Navy Box DarkTurquoise Box Khaki Box Chartreuse Box SandyBrown Box Purple Box DarkOrchid Box MediumOrchid Box Lavender Box Magenta Box DarkCyan Box MediumSlateBlue Box DeepPink Box Yellow Box

18 eighteenth

SeaGreen Box RoyalBlue Box DarkOrange Box BlueViolet Box MediumAquamarine Box Tan Box Peru Box Gold Box RosyBrown Box Pink Box Aqua Box GreenYellow Box YellowGreen Box CadetBlue Box OliveDrab Box Thistle Box Coral Box DeepSkyBlue Box

19 nineteenth

Coral Box DeepSkyBlue Box Green Box LimeGreen Box DodgerBlue Box DarkSeaGreen Box PowderBlue Box SpringGreen Box DarkMagenta Box SkyBlue Box MediumPurple Box LawnGreen Box ForestGreen Box SteelBlue Box Indigo Box DarkGoldenrod Box Goldenrod Box BurlyWood Box Blue Box

Numbers from 20 through 29 are:

20 twentieth

DarkGreen Box DarkKhaki Box Cyan Box Orchid Box Empty Box Violet Box Plum Box MediumBlue Box Sienna Box DarkOliveGreen Box Fuchsia Box MediumSpringGreen Box Teal Box MediumVioletRed Box Aquamarine Box DarkBlue Box Wheat Box MediumTurquoise Box Turquoise Box MediumSeaGreen Box

21 twenty-first
22 twenty-second
23 twenty-third
24 twenty-forth
25 twenty-fifth
26 twenty-sixth
27 twenty-seventh
28 twenty-eighth
29 twenty-ninth

Numbers from 30 through 90, counting by tens, are:

30 thirtieth
40 fortieth
50 fiftieth
60 sixtieth
70 seventieth
80 eightieth
90 ninetieth

We note that fourth is written with a u but fortieth is written without a u.

We write 31 as thirty-first. We write 85 as eighty-fifth.

Two-digit numbers are called tens.

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