Question 52
The value of $$[12 \times 5 - \left\{200 - (501 + 247 - 386) \right\} ] \div 2$$ is:
Solution
= $$[12 \times 5 - \left\{200 - (501 + 247 - 386) \right\} ] \div 2$$
= $$[12 \times 5 - \left\{200 - (748 - 386) \right\} ] \div 2$$
= $$[12 \times 5 - \left\{200 - 362\right\} ] \div 2$$
= $$[12 \times 5 - \left\{-162\right\} ] \div 2$$
= $$[12\times5+162]\div2$$
= $$[60+162]\div2$$
= $$[222]\div2$$
= 111
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