Simplifying Expressions
Simplify the following:
2a+4a=
6a
Simplify:
16g-9g
7g
Evaluate when k=10:
4+k=
14
Write an expression for the following:
A number, n, increased by 7
n+7
Evaluate when y = 8:
2y-5
11
Simplify:
3ab+2ab+6b
5ab+6b
23b^2-4b^2+6a
19b^2+6a
Evaluate when a = 4:
3a+6=
Write an expression for the following:
Three times a number, n, decreased by 4
3n-4
Simplify the following expression:
3a+b-a+5b
2a+6b
Simplify:
4y x 8y + 9
32y2 + 9
Simplify:
(40w)/5
8w
Evaluate when f = 6:
f^2+2f
48
Write an expression for the following:
A taxi charges a flat fee of $4 plus $3 for every kilometer travelled (k).
3k+4
Ava has m stickers. Ben has 5 more than twice the number of stickers Ava has. Write an expression for the number of stickers Ben has.
2m+5
Simplify:
3m x 5m x 2k x k
30m2k2
Simplify:
18a x 2a x cd
36a2cd
Evaluate when y = 8 and z = 2:
4yz+18+z^2
86
Sam is saving money. Each week he saves $20 plus an extra amount equal to half the number of hours he worked that week (h). Write an expression for how much he saves in one week?
20+h/2
Simplify:
7x+3y-2x+5-y+4x-8
9x+2y-3
Simplify:
(48c^2d)/(12cd^2)
(4c)/d
Simplify:
(75y^3z^2)/(15y^3)
5z^2
Evaluate when d = 2 and e = 5:
16d+5e+ed^2
77
A concert venue charges $15 for admission plus $8 for each friend you bring. Write an expression to represent the cost of bringing f friends.
8f+15
A rectangle has a length of a+3 cm and a width of a cm. What is its perimeter when a=5 ?
26cm