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Math: Working with brackets

Published on Nov 19, 2015

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PRESENTATION OUTLINE

Math: Working with brackets

By Mitchell Boribon

b.O.D.M.A.S

  • B STANDS FOR BRACKETS AND ACCORDING TO BODAS B COMES FIRST. 
  • WORK FROM THE INSIDE OUT

examples

  • Subs a=1 b=2 c=3
  • c(a+b)
  • 3x(1+2)
  • 3x3
  • 9

examples

  • Subs a=1 b=2 c=3
  • 6(a+b)
  • 6x(1+2)
  • 6x3
  • 18

examples

  • Subs a=7 b=13 c=16
  • 7c(11a÷1b)
  • 7x13[11x7÷(4+3)]
  • 91[77÷7]
  • 91x11 = 1 001

Multiple Choice Questions

Subs. v=6  z=9  y=12

6v(36+z)

  • 6x(36+z)=270
  • 6+(36+z)=51
  • 6x(36+z)=81
  • 6÷(36+z)=0.133

4vz(2y+2y)

  • 4xV+Zx(2+Y+2+Y)=276
  • 4xVxZx(2xY+2xY)=10368
  • 4+VxZx(2+Y+2+Y)=1516
  • 4xVxZx(2xY+2xY)=1368

7y(zv)

  • 7+Yx(ZxV)=655
  • 7xYx(Z+V)=120
  • 7xY÷(ZxV)=126
  • 7xYx(Z+V)=1260