Question

a)                 23 – 53 : 52 + 12.22	b)                5[(85 – 35 : 7) : 8 + 90] – 50
c)                 2.[(7 – 33 : 32) : 22 + 99] – 100	d)                27 : 22 + 54 : 53 . 24 – 3.25
e)                 (35 . 37) : 310 + 5.24 – 73 : 7	f)                  32.[(52 – 3) : 11] – 24 + 2.103
g)                 (72005 + 72004) : 72004	h)                (57 + 75).(68 + 86).(24 – 42)
i)                   (75 + 79).(54 + 56).(33.3 – 92)	j)                   [(52.23) – 72.2) : 2].6 – 7.25

Answer 1

a: \(2^3-5^3:5^2+12\cdot2^2\)

\(=8-5+48\)

\(=51\)

b: \(5\cdot\left[\left(85-35:7\right):8+90\right]-5\)

\(=5\cdot\left[10+90\right]-5\)

=495