Rational numbers

repeating decimals

A decimal whose decimal digits eventually repeat in the same pattern. ( -7.22222....., 0.818181..., 0.333333... )

irrational numbers

Any real number which cant be expressed as a fraction of two integers ( pi, -10, 12, 3, -5, 8.97543468.......)

Integers

All whole numbers (both positive and negative) and zero. ( ............-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10............)

Perfect square

The number times itself even the negative version ( 1(1)=1, 2(2)=4, 3(3)=9, 4(4)=16, 5(5)=25, 6(6)=36, 7(7)=49, 8(8)=64, 9(9)=81, 10(10)=100 )

square roots

What times itself or the negative version times itself ( /1=1, /4=2, /9=3, /16=4, /25=5, /36=6, /49=7, /64=8, /81=9, /100=10 )

How do i change from fraction to decimals?

You can do long division or use your 10s fact ( 1/5= 0.2 - one divide by 5 equals zero point two, 1/5=2/10 - multiply the numerator and denominator by 2 then you change 2/10 to a decimal, so two divide by ten )

terminating decimals

a decimal that ends ( 3.6, 0.4, 10.40, 0.75 )

real numbers

the set of numbers that includes rational and irrational numbers. ( all the numbers: 1,2,3,4,5,6,7,8,9,10,.................)