Transcript Math vocabulary Power pointx

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CREATED BY PAM SHEMBO
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* FACTORS: Numbers that you multiply to have
a product.
Ex: Factors of 24
1X24= 24
2X12= 24
3X8 = 24
4X6 = 24
List: 1, 2, 3, 4, 6, 8, 12 and 24.
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* MULTIPLES: The product of a given whole
number and any other whole
number.
Ex: Multiples of 24: 24, 48, 72, 96, 120,...
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* LEAST COMMON MULTIPLE OF 4 AND 5
* Mutiples of 4 : 4, 8, 12, 16, 20, 24, …
* Mutiples of 5: 5, 10, 15, 20, 25, 30,…
* LCM: 20
* PRIME NUMBERS: Numbers that only have 2
factors (1 and the number itself).
Ex: 2
11
1X2 = 2
1,2
1X 11 = 11
1, 11
* COMPOSITE NUMBERS: Numbers that have
more than 2 factors.
Ex: 12
1X12= 12
1, 2, 3, 4, 6, 12
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2X6=12
3X4=12
* ATTENTION!
1 and 0 are nor prime or composite!
* SQUARE NUMBER: A number that has been
multiplied by itself.
Ex: 16
4X4= 16
25
5x5= 25
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* EXPONENTS (EXPOSANTS):
5X5X5= 5 exponent 3 = 125
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* 1. Commutative property: You can change the
order of the factors.
Ex: 50 X 4 = 4 X 50
2. Associative property: You can change the
grouping of factors.
Ex: (7 X 25) X 4 = 7 x (25 x 4)
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* 3. Distributive property
Ex: 4 X 28 = 4 X (20 + 8) = (4X20) + (4x8)=
112
* 4. Identical property
Ex: 1 X 243 = 243
* 5. Zero property
Ex: 0 x 243 = 0
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* STEPS TO FOLLOW IN A DIVISION:
* 1. Daddy-Divide (How many times the divisor
goes into part of the dividend?)
* 2. Mommy-Multiply
* 3. Sister- Subtract
* 4. Brother-Bring Down
* 5. Daddy-Divide
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* ORDER OF OPERATIONS:
* 1. Parenthesis, brackets, braces (Go from the
* inside to the outside)
* 2. Exponents: 3X3X3 = 3 exponent 3 = 27
* 3. Divisions or multiplications in the order
that they appear in the equation from left to
right.
* 4. Subtractions or additions in the order that
they appear in the equation from left to right.
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VOLUME OF A RECTANGULAR PRISM
* Vol = Length X Width X Height
* OR Vol = Base X Height
AREA Of A RECTANGLE
A = Length X Width
AREA OF A SQUARE
A = S X S OR A = S exponent 2
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* PERIMETER OF A RECTANGLE
*P = Length + Length + width + width
*Or P = (Lx2) + (wx2)
* PERIMETER OF A SQUARE
*P = s+s+s+s
*OR = s x 4
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* ½= 50/100= 50%
* ¼= 25/100= 25%
* ¾ = 75/100= 75%
* 1/3 = 33.3/100 =33.3%
* 2/3 = 66.6/100= 66.6%
* 1/8 = 12.5/100=12.5%
* 1/5 = 20/100 = 20%
* 1/10 = 10/100 =10%
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* 1/4 + 1/6 = 3/12 + 2/12 = 5/12
* 2/3 – ½ = 4/6 – 3/6 = 1/6
* 3 ½ - 1 2/3= 3 3/6 - 1 4/6 = 2
1 5/6.
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9/6 – 1 4/6=
* ½ X ¼ = 1/8
Multiply the numerators together
and the denominators together.
* 2 ¼ X 10 = 2 X 10 = 20
¼ X 10 = ¼ X 10/1 = 10/4 = 10 ÷ 4 =2.5
20 + 2.5 = 22.5 = 22 and1/2
* 2 ¼ X 3 1/5 = 9/4 X 16/5 = 144/20 = 7 and 1/5
* For mixed number change them into improper
fractions!
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* 2 ÷ ¼ = 8 How many times ¼ goes into 2?
* ¼ ÷ 2 = 1/8 If ¼ of a pizza is left and 2
children share this 1/4 , how much of the
whole pizza will each get?
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* The Range: The difference between the biggest
and the smallest number in a series of data.
* The Mode: The number that is the most frequent
in a series of data.
* The Median: The number in the middle in a series
of data when you have placed them from smallest
to biggest.
* The Mean (The Average): Find the sum of a series
of numbers and then divide by how many numbers
there are.
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* Place these numbers from least to greatest:
0.517, 1.25, 0.3, 1.8
Strategy to use: ADD ZEROS
0.517, 1.250, 0.300, 1.800
Now place them from least to greatest
0.300, 0.517, 1.250, 1.800
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* To add or subtract decimal numbers ADD
ZEROS!
* EX: 5 – 3.89 =
* 5.00
* -3.89
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* 1. 11
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* When you add or subtract decimal numbers
LINE UP DECIMAL POINTS AND ADD ZEROS.
* EX: 3 + 2.258 =
* 3.000
* + 2.258
* ___________
* 5. 258
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* Multiplication of decimal numbers: DO NOT ADD ZEROS
* 6.8 X 2.3 =
* 6.8 One digit after the decimal point
* X 2.3 One digit after the decimal point
* ______
* 204
* + 1360
* ______
* 15.64 2 digits after the decimal point
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* DIVISIONS OF DECIMAL NUMBERS
* EX: 21.52 ÷ 0.8 =
* 1. Estimate: 21 ÷ 1 = 21
* 2. Calculate without the decimal points: 2152 ÷ 8= 269
* 3. Compare: 21 and 269. What can you do so that 269
will be close to 21? Add a decimal point so the answer is
26.9.
* 21.52 ÷ 0.8 = 26.9
* 4. Verify your answer: 26.9 × 0.8 = 21.52
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US CUSTOMARY
METRIC SYSTEM
1
1
1
1
1 cm = 10 mm
1 m= 100 cm
1 km = 1000 m
KILO means 1000
ft = 12 in
yd= 3 ft
mi = 5280 ft
mi = 1760 yd
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US CUSTOMARY SYSTEM
METRIC SYSTEM
1
1
1
1
1
1 L = 1000 ml
Gal = 4 qt
qt = 2 pt
pt = 2 c
Gal = 8 pt
Gal = 16 c
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US CUSTOMARY
METRIC SYSTEM
1 lb = 16 oz
1 T = 2000 lb
1 g = 1000 mg
1 kg = 1000 g
1 T = 1000 kg
KILO means 1000
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