Martes, Agosto 9, 2011

PEMDAS Rule

The rule that is higher than the MDAS rule is the PEMDAS rule.
This stands for: Parenthesis Exponents Multiplication Division Addition Subtraction.

The rules to follow are: first, perform the operation inside the parenthesis, then simplify exponentiation and lastly perform the MDAS.

One must master first on using the MDAS rule before he can master the PEMDAS rule.

Example:

 25 - {5 + (35/7 x 2^2 + 10) -2} + 3^2 - 6       Solve 35/5, 2^2 and 3^2 together and copy the rest.
= 25 - {5 + (5 x 4 + 10) - 2} + 9 - 6
= 25 - {5 + (20 + 10) - 2} + 9 - 6                           20 comes from 5 x 4 which is inside the parenthesis
= 25 - {5 + 30 - 2}+ 9 - 6
= 25 - 33 + 9 - 6
= -8 + 9 - 6
= 1 - 6
= - 6


Give a try:


1. - { 2^3 + [ - ( 5^2 x 5) + 100^1/2 - 10 ] x 2^0}
2. 44 - (5 x 6) / 3 + ( 3^3 / 3)^2 - ( 7^3)
3. 1 + { 67 + 9^2 - 100) - (4^2 x 2)/2}

22 komento:

  1. EMD - IT IIA

    Mam, nice post. thanks mam for the first time mag himo nko ug assignment nga akoy maghimo.. heheh! jowk..

    geh mam.

    TumugonBurahin
  2. LSS - IT IIA

    ^ cge part tabangan ka nahu,.. hahaha!

    TumugonBurahin
  3. -sosyalan na jud ta kron,,:)
    - perfect jud ni labina kay dli ko hilig ug copy sa assignment nga isuwat sa white board,, maayu nang dire tah,,,hahaha,,
    :0

    TumugonBurahin
  4. -i'm working on it,,,,

    TumugonBurahin
  5. MGEM-IT II A
    GRACE
    Thanks ma'am ...dli na jud me maglisud ug pag.notes...

    TumugonBurahin
  6. JTC
    STUDY RAKO ANI MAM

    TumugonBurahin
  7. Naalis ng may-ari ang komentong ito.

    TumugonBurahin
    Mga Tugon
    1. Practice solving expressions like this. and always remember to follow the rule. Solve what is inside the parenthesis and simplify exponents before multiplication or division and solve last addition and subtraction.

      Burahin
  8. 1-6=-6? i thought it's -5?

    TumugonBurahin
  9. Good, at last someone noticed it. it's been a long time i'm waiting for that comment.

    TumugonBurahin
  10. My final answer is -23 using the pemdas rule.
    25 - {5 + (35/7 x 2^2 + 10) -2} + 3^2 - 6 = n
    25 - {5 + (5 x 4 + 10) -2} + 9 - 6 = n
    25 - {5 + (20 + 10) -2} + 9 - 6 = n
    25 - {5 + (30) -2} + 9 - 6 = n
    25 - {35 -2} + 9 - 6 = n
    25 - {33} + 9 - 6 = n
    25 - {33} + 9 - 6 = n
    25 - 42 - 6 = n
    (25 - 42) - 6 = n
    (- 17) - 6 = n
    -23 = n

    TumugonBurahin
    Mga Tugon
    1. yung example mali ang sagot....ang tamang sagot ay -23

      Burahin
    2. Mali yung -23. Tama yung -5. Check ur computation 4th to the last line.

      Burahin
  11. i thought
    3^2-6
    6-6 ???

    how come
    3^2-6
    9-6

    confused!

    TumugonBurahin
  12. Q2) 44-(5×6)÷3+(3^3/3)^2-(7^3)
    44-30÷3+(27/3)^2-343
    44-10+(9)^2-343
    44-10+81-343
    44+71-343
    44-272
    -228

    TumugonBurahin
  13. Q3) 1+{67+9^2-100)-(4^2×2)/2}
    1+{67+81-100)-(16×2)/2}
    1+{148-100)-32÷2}
    1+{48-32÷2}
    1+{48-16}
    1+32
    33

    TumugonBurahin
  14. 25-{5+(35/7×2^2+10)-2}+3^2-6
    25-{5+(5×4+10)-2}+9-6
    25-{5+(20+10)-2}+9-6
    25-{5+30-2}+3
    25-33+3
    25-30
    -5

    TumugonBurahin