Write a number sentence to add 6 ones to 21.write number sentence to add 6 tens to 21

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

What is 20+(5 x 2/5 )+ 3 show your work