Question

a)      2345 – 1000 : [19 – 2(21 – 18)2] b)     128 – [68 + 8(37 – 35)2] : 4 c)      568 – {5[143 – (4 – 1)2] + 10} : 10 d)     107 – {38 + [7.32 – 24 : 6+(9 – 7)3]}:15 e)      307 – [(180 – 160) : 22 + 9] : 2 f)      205 – [1200 – (42 – 2.3)3] : 40 g)     177 :[2.(42 – 9) + 32(15 – 10)] h)     [(25 – 22.3) + (32.4 + 16)]: 5 i)       125(28 + 72) – 25(32.4 + 64) j)       500 – {5[409 – (23.3 – 21)2] + 103} : 15

Answer 1

b: \(=128-\left[68+8\cdot2^2\right]:4\)

\(=128-100:4\)

=128-25

=103