Whole Numbers and Cardinal Numbers: 10 to 99

Numbers from 11 through 19 are:

11 eleventh

OliveDrab Box Gold Box CadetBlue Box Plum Box Olive Box Cyan Box DarkOrchid Box DarkOliveGreen Box BlueViolet Box MediumPurple Box HotPink Box

12 twelth

HotPink Box DarkKhaki Box GreenYellow Box Orchid Box MidnightBlue Box RosyBrown Box Aquamarine Box MediumSeaGreen Box YellowGreen Box SaddleBrown Box BurlyWood Box MediumAquamarine Box

13 thirteenth

MediumAquamarine Box DarkSlateBlue Box Tan Box MediumSpringGreen Box Aqua Box DarkBlue Box CornflowerBlue Box DarkViolet Box Fuchsia Box Goldenrod Box Violet Box MediumVioletRed Box MediumOrchid Box

14 fourteenth

MediumOrchid Box Turquoise Box DarkGoldenrod Box Coral Box Lavender Box Wheat Box RoyalBlue Box SlateBlue Box DarkGreen Box Chocolate Box Yellow Box Peru Box Green Box Brown Box

15 fifteenth

Chartreuse Box SteelBlue Box SandyBrown Box Pink Box Teal Box DarkSeaGreen Box DarkTurquoise Box DarkOrange Box Indigo Box DeepSkyBlue Box Purple Box Blue Box Khaki Box Empty Box Sienna Box

16 sixteenth

MediumSlateBlue Box PowderBlue Box SpringGreen Box SeaGreen Box Maroon Box MediumBlue Box Navy Box Magenta Box DodgerBlue Box Thistle Box SkyBlue Box DarkCyan Box LawnGreen Box LawnGreen Box LawnGreen Box LawnGreen Box

17 seventeenth

OliveDrab Box Gold Box CadetBlue Box Plum Box Olive Box Cyan Box DarkOrchid Box DarkOliveGreen Box BlueViolet Box MediumPurple Box HotPink Box DarkKhaki Box GreenYellow Box Orchid Box MidnightBlue Box RosyBrown Box Aquamarine Box

18 eighteenth

YellowGreen Box SaddleBrown Box BurlyWood Box MediumAquamarine Box DarkSlateBlue Box Tan Box MediumSpringGreen Box Aqua Box DarkBlue Box CornflowerBlue Box DarkViolet Box Fuchsia Box Goldenrod Box Violet Box MediumVioletRed Box MediumOrchid Box Turquoise Box DarkGoldenrod Box

19 nineteenth

Turquoise Box DarkGoldenrod Box Coral Box Lavender Box Wheat Box RoyalBlue Box SlateBlue Box DarkGreen Box Chocolate Box Yellow Box Peru Box Green Box Brown Box ForestGreen Box DeepPink Box Chartreuse Box SteelBlue Box SandyBrown Box Pink Box

Numbers from 20 through 29 are:

20 twentieth

DarkSeaGreen Box DarkTurquoise Box DarkOrange Box Indigo Box DeepSkyBlue Box Purple Box Blue Box Khaki Box Empty Box Sienna Box LimeGreen Box MediumSlateBlue Box PowderBlue Box SpringGreen Box SeaGreen Box Maroon Box MediumBlue Box Navy Box Magenta Box DodgerBlue 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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