Whole Numbers and Cardinal Numbers: 10 to 99

Numbers from 11 through 19 are:

11 eleventh

Pink Box Magenta Box SlateBlue Box Thistle Box RoyalBlue Box Lavender Box Teal Box YellowGreen Box MediumSpringGreen Box Wheat Box Brown Box

12 twelth

Brown Box Gold Box MediumBlue Box SteelBlue Box Maroon Box DarkBlue Box SkyBlue Box DarkGoldenrod Box Khaki Box HotPink Box DarkMagenta Box DarkOrange Box

13 thirteenth

DarkOrange Box Goldenrod Box Turquoise Box PowderBlue Box Tan Box MediumSeaGreen Box Aqua Box MediumTurquoise Box LimeGreen Box DarkCyan Box DeepSkyBlue Box MediumVioletRed Box Yellow Box

14 fourteenth

Yellow Box Blue Box DarkViolet Box MediumSlateBlue Box BurlyWood Box Navy Box BlueViolet Box Empty Box DarkGreen Box Chocolate Box Violet Box LawnGreen Box CadetBlue Box DarkOrchid Box

15 fifteenth

SeaGreen Box Cyan Box Plum Box DarkSlateBlue Box OliveDrab Box SandyBrown Box Green Box Chartreuse Box Sienna Box DarkOliveGreen Box Peru Box Orchid Box RosyBrown Box DodgerBlue Box CornflowerBlue Box

16 sixteenth

MediumAquamarine Box MidnightBlue Box GreenYellow Box Olive Box DarkTurquoise Box Fuchsia Box MediumOrchid Box ForestGreen Box DeepPink Box Indigo Box Aquamarine Box DarkSeaGreen Box SpringGreen Box SpringGreen Box SpringGreen Box SpringGreen Box

17 seventeenth

Tan Box Thistle Box BurlyWood Box SpringGreen Box Yellow Box LawnGreen Box SlateBlue Box Sienna Box Gold Box GreenYellow Box Brown Box OliveDrab Box Pink Box SteelBlue Box DarkOrange Box Chartreuse Box DarkViolet Box

18 eighteenth

MediumSlateBlue Box Goldenrod Box Turquoise Box Purple Box Empty Box DarkGreen Box Magenta Box RosyBrown Box Aquamarine Box SkyBlue Box Lavender Box Olive Box MediumBlue Box Orchid Box DarkCyan Box MediumSpringGreen Box DarkOliveGreen Box DarkKhaki Box

19 nineteenth

DarkOliveGreen Box DarkKhaki Box DarkTurquoise Box Coral Box Violet Box Indigo Box CornflowerBlue Box YellowGreen Box LimeGreen Box BlueViolet Box Teal Box DarkSeaGreen Box MidnightBlue Box SandyBrown Box MediumSeaGreen Box Chocolate Box MediumVioletRed Box CadetBlue Box DodgerBlue Box

Numbers from 20 through 29 are:

20 twentieth

RoyalBlue Box Blue Box SaddleBrown Box Peru Box DeepSkyBlue Box DarkGoldenrod Box HotPink Box Wheat Box DeepPink Box MediumAquamarine Box Navy Box DarkOrchid Box Khaki Box Cyan Box MediumOrchid Box Aqua Box MediumTurquoise Box DarkSlateBlue Box Green Box DarkMagenta 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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