*USING LETTERS FOR NUMBERS
In many instances, letters are conveniently used in placed of
numbers.
See if you can write the following expressions by using the letter
“n” to represent the number in each
question.
VERBAL EXPRESSION SYMBOLIC
EXPRESSION
1. 6 more than a number
N + 6
2. A number increased by 10
N + 10
3. 7 less than a number
N - 7
4. 15 plus a number
15 + N
5. 5 less the number
5 - N
6. A number and 12 more
N + 12
7. The number decreased by
4
N - 4
8. 8 times the number 8N
9. The number divided by 6 N / 6
10. 1/2 of the number 1/2 N
11. The number multiplied
by 8 8N
12. The sum of the number
and 1 N + 1
13. Twice the number
increased by 1
2N + 1
14. 7 less 3 times the
number 7 - 3N
15. The difference between
the number and 11 N - 11
16. 1/2 the sum of the
number and 9
1/2(N + 9)
17. 6 less than 1/2 the
number
1/2N - 6
18. The sum of 4 times the
number and plus 7
4N + 2
19. The square of the
number N 2
20. The square of the
number plus 7 N 2+ 7
21. 3 times the square of
the number 3N 2
22. The square of the
number minus 15 N 2 - 14
23. The product of the
number and 15
15N
24. 6 more than 6 times the
number 6N + 6
25. 7 times the number less
4 7N - 4
26. 1/4 of the number
increased by 9
1/4 N + 9
27. 20 minus 2/3 the number
20 - 2/3 N
28. 3 less than 1/2 the
number
1/2N - 3