1. Use ‘ODMAS' rule to simplify the following problems:
(a) 80 of 70 + 40 : 4 - 3 X
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Step-by-step explanation:
1. Bracket → Solve inside the Brackets before Of, Multiply, Divide, Add or Subtract.
For example:
7 × (15 + 5)
= 7 × 20
= 140
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