Whole Numbers and Cardinal Numbers: 10 to 99

Numbers from 11 through 19 are:

11 eleventh

DarkOrchid Box Cyan Box DarkSeaGreen Box SteelBlue Box CadetBlue Box SeaGreen Box Coral Box SandyBrown Box Green Box Navy Box DarkMagenta Box

12 twelth

DarkMagenta Box Teal Box Chocolate Box Khaki Box PowderBlue Box Peru Box MediumSpringGreen Box DarkOliveGreen Box ForestGreen Box Empty Box CornflowerBlue Box GreenYellow Box

13 thirteenth

GreenYellow Box Pink Box RosyBrown Box Sienna Box Chartreuse Box Gold Box BlueViolet Box DarkSlateBlue Box OliveDrab Box Tan Box SpringGreen Box Magenta Box DarkGoldenrod Box

14 fourteenth

DarkGoldenrod Box SlateBlue Box RoyalBlue Box Goldenrod Box DodgerBlue Box BurlyWood Box DarkTurquoise Box MediumVioletRed Box MediumSeaGreen Box MediumOrchid Box Aquamarine Box Turquoise Box Purple Box MidnightBlue Box

15 fifteenth

MediumPurple Box DarkKhaki Box Aqua Box DarkOrange Box DeepPink Box SkyBlue Box Wheat Box LawnGreen Box LimeGreen Box Brown Box YellowGreen Box Maroon Box Blue Box MediumSlateBlue Box Orchid Box

16 sixteenth

HotPink Box Indigo Box Yellow Box MediumAquamarine Box Thistle Box DeepSkyBlue Box Fuchsia Box DarkCyan Box DarkGreen Box MediumBlue Box MediumTurquoise Box SaddleBrown Box Lavender Box Lavender Box Lavender Box Lavender Box

17 seventeenth

GreenYellow Box MediumPurple Box Khaki Box SteelBlue Box DarkOliveGreen Box SlateBlue Box CadetBlue Box Plum Box DarkBlue Box Cyan Box DarkKhaki Box DarkOrange Box DeepSkyBlue Box Indigo Box Magenta Box OliveDrab Box Blue Box

18 eighteenth

LawnGreen Box Turquoise Box Sienna Box YellowGreen Box DarkTurquoise Box Brown Box MediumTurquoise Box BlueViolet Box SaddleBrown Box Yellow Box CornflowerBlue Box Teal Box DeepPink Box DarkViolet Box Chartreuse Box SkyBlue Box DarkGoldenrod Box PowderBlue Box

19 nineteenth

DarkGoldenrod Box PowderBlue Box Coral Box Lavender Box HotPink Box Peru Box SeaGreen Box LimeGreen Box Aqua Box DarkGreen Box Gold Box BurlyWood Box ForestGreen Box Tan Box DarkMagenta Box SpringGreen Box RoyalBlue Box Fuchsia Box MediumBlue Box

Numbers from 20 through 29 are:

20 twentieth

SandyBrown Box MediumSeaGreen Box DodgerBlue Box MediumOrchid Box DarkSlateBlue Box DarkSeaGreen Box Chocolate Box DarkOrchid Box Pink Box MediumAquamarine Box Violet Box Wheat Box DarkCyan Box Olive Box MediumSlateBlue Box RosyBrown Box Orchid Box Purple Box Aquamarine Box Thistle 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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