Addition of larger numbers:
1) Re-write the
numbers in a stacked formation, making sure the decimal points are in line.
2) Add the numbers in
sequence starting from the right, working to the left. Make sure the decimal points
of all numbers are kept in line when writing down your numbers.
Example:
4562.56
+ 123.126 + 13.12 = 4698.806
Division:
To work out how
many times a number goes into another number.
1)
Place the number being divided inside the divide symbol
)¯¯¯¯ then place the number to divide by, on the right
side the
symbol.
2) Break the number
to be divided into smaller sections.
3) Estimate how many times the dividing
number goes into each section.
- the dividing number is
called the divisor.
- the number to be divided is
called the dividend.
- the end result
of the
division is called the quotient.
Refer
to the example below.
24 ÷ 360 = 15
Multiplication:
Have
fun with multiplication! Do you know your 12 times tables? If you
don't, it's good advice to learn them. If you practice them once a day,
you will obtain a very valuable tool and it makes these multiplication
problems a whole lot easier to work out.
When
you have a large multiplication problem you must remember
to keep the numbers in line. Do not bring the decimal point down in
your calculations. The first number in the sum has 2
digits to the right of the decimal point, the other number has only
one, therefore you count back three places from the
right of the product (the product is the final answer). (see example)
23.5 × 345.67
= 8123.245
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