When a positive
number is multiplied by a negative number the answer is negative.
When two
negative numbers are multiplied together the answer is positive.
EXAMPLES:
–3 ×
(–7) = 21
5 ×
(–3) = –15
–1 ×
(–2) × (–3) = –6
Order of operation.
Everyone has
agreed to work out problems in the same order so that there is only one correct
answer.
The table below
shows the order.
Remember the
word ‘BODMAS’ (the ‘O’
is just used to make a word)
EXAMPLE:
14 ×
2 + 3 × 5
= 28 + 15
=43
Lesson 4
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