This document discusses decimals and contains three main points: 1. Decimals can be thought of as fractions, with the digits after the decimal point representing fractional amounts. 2. When adding or subtracting decimals, it is important to line up the decimal points to perform the calculation accurately. 3. Pounds and pence in the UK are always calculated to two decimal places to properly account for fractional amounts of pence.

1. October 4, 2012
Negative numbers and decimals
2. Decimals
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2. Explanation October 4, 2012
This number contains decimals. 6 9 1 3 4
h
sd e dnu
r
Putting it in a table like this
shows how you can think of the
digits after the decimal point as
s h de dnuh
s eno
s h ne
s ne
t t
t
fractions.
t r
When you add or subtract 1 3 5 2 7
+
decimals on paper, take care 81 2 6 61 1
to line up the decimal points.
This answer means
8 hundreds + 2 tens + 6 ones + 6 tenths + 1 hundredth
800 + 20 + 6 + 6 + 1
10 100
8 2 6 . 6 1
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3. Explanation October 4, 2012
Pounds and pence are always calculated in decimals,
with two decimal places.
1 2 2 9
+ 6 3 1
1 5 6 0
Your answer must be £15.60, not £15.6, to show the 60p
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