b) 42.53 + 47.156 – 47.114
b) 42.53 + 47.156 – 47.114
b) 42.53 + 47.156 – 47.114
= 42.53 + 47.(156 – 114)
= 42.53 + 47.42
= 42.(53 + 47)
= 42.100
= 4200