Add (+), subtract (-), multiply (x) or divide mixed numbers.
Warm Up Pick a set of four numbers given and make the number 24 from the four numbers. You can add,...
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Warm Up Pick a set of four numbers given and make the number 24 from the four numbers. You can add, subtract, multiply and divide. Use all four numbers on the card, but use each number only once. You do not have to use all four operations. •3, 8, 10, 4 •1,1,5,6 •1,2,2,4 •2,3,4,8
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Transcript of Warm Up Pick a set of four numbers given and make the number 24 from the four numbers. You can add,...
Warm UpPick a set of four numbers given and make the number
24 from the four numbers. You can add, subtract, multiply and divide. Use all four numbers on the card, but use each number only once. You do not have to
use all four operations.
• 3, 8, 10, 4
• 1,1,5,6
• 1,2,2,4
• 2,3,4,8
Order of Operations
(G.E.M.D.A.S)
G.E.M.D.A.S.
• “ ”= Grouping Symbols ( ), [ ] , { }
• “ ”= Exponent “22”• “ ”= Multiplication “6x8”• “ ”= Division “9÷3”• “ ”= Addition “7+5”• “ ”= Subtraction “10-4”
What is G.E.M.D.A.S and why do we need
it?G.E.M.D.A.S. is also know as the Order of
Operations.
Order of Operations is the order in which you perform mathematical operations to solve an equation/expression.
STEPS• 1st: Do what is inside of grouping
symbol ( ), { } or [ ].• 2nd: Simplify Exponents.• 3rd: Multiply or divide from left to
right.• 4th: Add or subtract from left to right.
GROUPING SYMBOLS“( )” , ”[ ] or { }”
•Used to group equations.
•Parenthesis ( ) Brackets [ ] or
Braces{ }
6 [100 – (5+3)2]
6 [100 – (8)2] 6 [100 – 16]6 [ 84 ]Answer: 504
xponents “22”• Used to multiply
the same number repeatedly.
• Exponent tells how many times a base number is multiplied by itself.
• 53 = 5x5x5 =125
ultiplication “x ”
ivision “÷ ”
Do multiplication and division 3rd, from left to right.
ddition “+ ”
ubtraction “–”
Do addition and subtraction 4th, from left to right.
Practice6(4÷2)+3
Answer:
Practice7+(2[2x52 ]-3)
Answer:
Practice18÷(6x2-9)2
Answer:
Practice40-(32+5)÷7
Answer:
Practice(3x2-1)3÷5
Answer:
Practice75 - (36-6) 23 - 3
=
Answer:
Tips to Remember:
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An easy way to remember GEMDAS is:
Evaluate the following:
1. 18 + 36 – 32 =
2. 289 – (3 x 5)2 =
3. 45 + 81[(5+4) ÷ (7 - 4)2 ]=
4. 100 - (36-6)
12+ 3 =
5. 8 + (2 x 5) x 54 ÷ 5 =
