Question

a) 785+115+37 x (15 + 23 x 12)

b) 624-120+2025: (226-17 x 13)
c) 145+47 x [ 215 x 110-83 x (405-18 x 16) ]
d) 512-287+10 x {15+2x3 + [105:15+(120-5x 19)x 10] x 2}
e) 43648 : 64-15x [207 - (2002 - 1080:90)]
f) 63450 : 45 + 108 x 21 (105x15+17) x 25

Answer 1

a) 785+115+37 x (15 + 23 x 12)= 785+115+37× (15+ 276) = 785 +115 +37 × 291 = 785+115+ 10.767 = 11.667

b) 624-120+2025: (226-17 x 13)=
624-120+2025:(226- 221) = b) 624-120+2025: 5 = b) 624-120+405 = 909

c) 145+47 x [ 215 x 110-83 x (405-18 x 16)]=
145+47 x [ 215 x 110-83 x (405-288) ]=
145+47 x (215 x 110-83 x 117) =
145+47 x (23.650 - 9.711)=
145+47× 13.939 =
145+ 655.133 = 655.278

d) 512-287+10 x {15+2x3 + [105:15+(120-5x 19)x 10] x 2}=
512-287+10 x {15+2x3 + [105:15+(120- 95)x 10] x 2}=
512-287+10× [15+2x3+(105:15+25x10)×2]=
512-287+10× [15+2x3+(7+250)×2]=
512-287+10× (15+2x3+257×2)=
512-287+10× (15+6+514)=
512-287+10× 535=
512-287+5.350=
225+5.350 = 5.575