CPEA Mathematics

1. Subtracting Decimals
Subtracting decimals is easy when you keep your work neat
To subtract decimals, follow these steps:
 Write down the two numbers, one under the other, with the decimal points lined
up.
 Add zeros so the numbers have the same length
 Then subtract normally, remembering to put the decimal point in the answer
Example: Subtract 0.03 from 1.1
Line the decimals up: 1.1
− 0.03
"Pad" with zeros: 1.10
− 0.03
Subtract: 1.10
− 0.03
1.07
Answer: 1.07
That was just like 110 − 3 = 107, but with the decimal point in a different
position
Example: Calculate 7.005-0.55
Line the decimals up: 7.005
− 0.55
"Pad" with zeros: 7.005
− 0.550

2. Subtract: 7.005
− 0.550
6.455
Answer: 6.455
And that was just like 7005 − 550 = 6455