High Order Thinking Skills (HOTS)
13. Simplify:
(a) 25 - [20 - {8÷4-(15-25÷ 5) ÷ 2}]
(b) 45 ÷ {8-(-2 of 5 + 3)}
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Step-by-step explanation:
a) 25-[20-{8/4-(15-25/5)/4}]
=25-[20-{8/4-(15-5)/4}]
=25-[20-{8/4-10/4]
=25-[20-{2-2.5}]
=25-[20-{-0.5}]
=25-[20+0.5]
=25-[20.5]
=4.5
b) 45÷{8-(-2 of 5+3)}
45÷{8-(-10+3)}
45÷{8-(-7)}
45÷{8+7}
45÷15
3
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