Whole Numbers and Cardinal Numbers: 10 to 99

Numbers from 11 through 19 are:

11 eleventh

Purple Box Turquoise Box Coral Box MediumOrchid Box DarkBlue Box Fuchsia Box Aqua Box DodgerBlue Box OliveDrab Box Magenta Box Tan Box

12 twelth

Tan Box BurlyWood Box DarkGoldenrod Box DeepPink Box DarkOliveGreen Box Chocolate Box Blue Box Violet Box MediumSpringGreen Box MediumBlue Box Sienna Box DarkMagenta Box

13 thirteenth

DarkMagenta Box MediumVioletRed Box Yellow Box ForestGreen Box Plum Box GreenYellow Box SandyBrown Box DarkKhaki Box SlateBlue Box CornflowerBlue Box MediumSlateBlue Box DarkTurquoise Box SkyBlue Box

14 fourteenth

SkyBlue Box Chartreuse Box Gold Box SeaGreen Box Aquamarine Box MediumAquamarine Box DarkViolet Box LimeGreen Box MediumSeaGreen Box Thistle Box HotPink Box SaddleBrown Box MediumTurquoise Box Goldenrod Box

15 fifteenth

Navy Box Teal Box YellowGreen Box Indigo Box RosyBrown Box Khaki Box Olive Box Green Box DarkOrange Box DeepSkyBlue Box MediumPurple Box Empty Box DarkOrchid Box DarkCyan Box SpringGreen Box

16 sixteenth

LawnGreen Box RoyalBlue Box Lavender Box CadetBlue Box Wheat Box MidnightBlue Box Brown Box Peru Box Orchid Box DarkSlateBlue Box Pink Box PowderBlue Box SteelBlue Box SteelBlue Box SteelBlue Box SteelBlue Box

17 seventeenth

Purple Box Turquoise Box Coral Box MediumOrchid Box DarkBlue Box Fuchsia Box Aqua Box DodgerBlue Box OliveDrab Box Magenta Box Tan Box BurlyWood Box DarkGoldenrod Box DeepPink Box DarkOliveGreen Box Chocolate Box Blue Box

18 eighteenth

MediumSpringGreen Box MediumBlue Box Sienna Box DarkMagenta Box MediumVioletRed Box Yellow Box ForestGreen Box Plum Box GreenYellow Box SandyBrown Box DarkKhaki Box SlateBlue Box CornflowerBlue Box MediumSlateBlue Box DarkTurquoise Box SkyBlue Box Chartreuse Box Gold Box

19 nineteenth

Chartreuse Box Gold Box SeaGreen Box Aquamarine Box MediumAquamarine Box DarkViolet Box LimeGreen Box MediumSeaGreen Box Thistle Box HotPink Box SaddleBrown Box MediumTurquoise Box Goldenrod Box DarkGreen Box BlueViolet Box Navy Box Teal Box YellowGreen Box Indigo Box

Numbers from 20 through 29 are:

20 twentieth

Khaki Box Olive Box Green Box DarkOrange Box DeepSkyBlue Box MediumPurple Box Empty Box DarkOrchid Box DarkCyan Box SpringGreen Box Maroon Box LawnGreen Box RoyalBlue Box Lavender Box CadetBlue Box Wheat Box MidnightBlue Box Brown Box Peru Box Orchid 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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