Download signs and letters

Algebra
SIGNS AND LETTERS
When we use algebra, we usually leave the multiplication sign (x) out.
So a x b can be written ab.
c x a x b would be written abc.
(usually we put the letters in alphabetical order)
If there are numbers too, we put them first.
So a x 2 is written 2a.
A)
Try writing these out:
1)
r x s x t
5)
z x y x 2 x w
2)
b x 4
6)
5 lots of 
3)
c x 3 x d
7)
p times q
4)
t x s x 4
8)
n x m x 6
If we have 1 x a letter, the 1 is not needed.
So
1 x a = not 1a but a
b x 1 = just b.
Because we don’t use the multiplication sign, the missing number in
the problem:
2n = 6
means:
2 x n = 6
So: n must be 3.
B)
Try finding these missing numbers:
1)
3a =
12
4)
5b =
20
2)
6y =
30
5)
4 =
16
3)
10p =
20
6)
2t =
24
f lex i p
Check your answers then discuss with your tutor what you need to
work on next.
ac k s
1
Algebra
Answers
Signs And Letters
A)
f lex i p
B)
1)
rst
2)
4b
3)
3cd
4)
4st
5)
2 wyz
6)
5
7)
pq
8)
6mn
1)
a=4
2)
y=5
3)
p=2
4)
b=4
5)
=4
6)
t = 12
ac k s
2