how do I write an algebraic expression for fourth grade pre-algebra?

Question

The sum of a number and eight.

Five less than a number.

The difference between a number and six.

The product of a number and nine.

Four times a number.

The quotient of eighteen and a number.

 

Answer 1

1.) The sum lets you know its addition, a number could be anything we don't know and 8.   we will let x represent any number ( you can use any expression)  x+8

2.)  5 < x    

3.)  product lets you know its multiplication, again one is unknown and the other is 9.

you can write this like 9x or 9(x) or 9 x X

4.) this is the same as the one above, 4x or 4 x X (IF YOU DONT LIKE THE LETTER X YOU CAN USE ANY LETTER IT DOESNT MATTER like 4 x b)

5.) quotient means division: 18 divided by x or 18/x

Answer 2

w+9 model expression

Answer 3

17 fewer than 44