Math: Working with brackets

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

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