When working problems involving fractions which have more than one of the following signs; of, ×, +, -, and ÷, we use what is known as BODMAS. The following steps should be followed in the order shown:
Step 1: Deal with anything in Brackets first ( if there is any). i.e. ( )
Step 2: Deal with O= Of ( if there is any ). i.e. ×
Step 3: Deal with D = Division ( if there is any). i.e. ÷
Step 4: Deal with M= Multiplication ( if there is any) i.e. ×
Step 5: Deal with A = Addition ( if there is any) i.e. +
Step 6: Deal with S= Subtraction ( if there is any) i.e. --
EXAMPLE
1/2 (1 1/2 + 3/4 ÷ 1/4)
Solution
=1/2 ( 3/2 + 3/4 × 4/1)
=1/2 ( 3/2 + 3/1)
=1/2 × 9/2
=9/2
ASSIGNMENT
1. (1/4 + 1/2) ÷ 5/12 of 1 1/52. 1/3 + 5/12 -- 1/3 of 1/6
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