Transcript unit-2-math-lunch-and

MATH
LUNCH&LEARN
October 3, 2016
AGENDA
12:00-12:05- Arrive and Introductions
12:05-12:10- Unit Overview and Guided Math
12:10-12:30- Explanation of the standards in the
unit
12:30-12:40- Questions and Comments
12:40-12:45- Feedback
Session 1
Session 2
Session 3
October 10th
Review Place value
• Writing numbers in
expanded notation
Week1
Give pre-test this week on
October 3rd.
October 6
October 9th
Adding Multi-Digit Numbers Two Step problems
Subtracting Multi-Digit
• Write open sentence
Numbers
• Explain answer
To the hundredths
32.12-21.30
Week2
No school on the 19th and
20th
October 13th
Magnitude Estimates
2 digit numbers
October 16th
Magnitude Estimates
3 digit numbers
October 17th
Magnitude Estimates
Decimals
October 23rd
Converting US Customary
Units
October 24th
Mean, Mode, Median
October 27th
Mean, Mode, Median
Week3
Week 4
October 30
Review
October 31st
Review
1:20-2:00
Assess
2:00-3:00
November 3rd
Pre-Assessment for Unit 3
5.NBT.7
Add, subtract, multiply, and divide decimals to
hundredths, using concrete models or drawings
and strategies based on place value,
properties of operations, and/or the
relationship between addition and subtraction;
relate the strategy to a written method and
explain the reasoning used.
ADDING MULTI-DIGIT NUMBERS
356.78 + 2.29
Incorrect Way
356.78
+ 22.9
Correct Way
356.78
+22.90
It’s okay to add zero as a place holder
ADDING MULTI-DIGIT NUMBERS
Million
Hundred
Thousand
Ten Thousand
Thousand
356.78 + 2.29
Make sure the decimals are lined up
Digits will range from the millions to the hundredths
Hundreds
Tens
Ones
Tenths
Hundredths
SUBTRACTING MULTI-DIGIT NUMBERS
Million
Hundred
Thousand
Ten Thousand
Thousand
424.78 - 1.59
Make sure the decimals are lined up
Digits will range from the millions to the hundredths
Hundreds
Tens
Ones
Tenths
Hundredths
CUSTOMARY LENGTH
12 inches (in) = 1 foot (ft)
36 inches = 3 feet or 1 yard
(yd)
5,280 feet = 1 mile (mi)
To change from a larger
unit of measure to a
smaller unit, MULTIPLY.
To change from a
smaller unit of measure
to a larger unit, DIVIDE.
Inches, Feet, Yards, Miles
Customary Length Conversion
Examples:
1
ft
=
12
in
48
4 ft = _____ in
4 x 12 = 48
1 ft
12 in
as
4 ft
48 in
9
MULTIPLICATION STRATEGIES
Area Model
Standard Algorithm
14 X 25: AN AREA MODEL
80
+
5
20
10
+
4
20
*Sketch is not drawn to scale.
11
200
50
200
80
50
+20
STANDARD ALGORITHM
2 7 8
 5 6
Keep in mind that you are multiplying
6 x8
6 x 70
6 x 200
We always add the zero as the place holder
because we are now multiplying by 10s.
50 x8
50 x70
50 x 200
MULTIPLYING DECIMALS
STANDARD ALGORITHM with DECIMALS
2 7 8
 5 6
Multiply just as you would with the
standard algorithm.
Look at how many decimal places
there are.
Think- How many digits are there behind
the decimal.
In your final answer, move your decimal
over the number of digits
MAGNITUDE ESTIMATES
Whole Numbers
Decimals
323 x 279
300 x 300
Estimate-90,000
Actual answer-90,117
5.95 x 2.3
6x2
Estimate- 12
Actual answer- 13.685
MEAN, MODE, MEDIAN
Mean
Mode
The mean is the numerical
average of the data set.
The number that appears
the most in the set.
The mean is found by adding
all the values in the set, then
dividing the sum by the number
of values
Example
1+2+4+5+5+5+6+7+8+9+
10=62
5 is the mode.
62 11= 5.6
1,2,4,5,5,5,6,7,8,9,10
Median
The number that is in the middle.
Arrange the numbers in order
from least to greatest.
When there is an even number
you take the two numbers and
divide them by two.
Example
1,2,4,5,5,5,6,7,8,9,10
5 is the median in this set
Math Resources on IXL
Addition
Subtraction
Multiplication
Estimation
Mean, Mode,
Median,
Customary Units
Place Value
B.2Add numbers
C.1Subtract
up to millions: word numbers up to
problems
millions
D.5Multiply 1-digit
numbers by 2-digit
numbers
D.12Estimate
products - multiply
by 1-digit numbers
X.1Calculate
mean, median,
mode, and range
N.3Compare and
convert customary
units of length
A.1Place values in
whole numbers
B.2Add and subtract whole
numbers: word problems
D.15Box
multiplication
P.10Estimate
products
.3Mean, median,
mode, and range
BB.8Compare and
convert customary
units of length
A.2Word names
for numbers
B.11Estimate sums and differences:
word problems
D.21Multiply a 2digit number by a
larger number:
complete the
missing steps
I.1Estimate
products of
decimals
X.2Mean, median,
mode, and range:
find the missing
number
BB.4Which
customary unit of
length is
appropriate?
A.6Rounding
B.4Add and subtract money: word
problems
D.27Multiply three
or more numbers:
word problems
C.9Estimate
products: word
problems
X.3Interpret charts Z.2Compare and
to find mean,
convert customary
median, mode, and units of length
range
A.4Word names
for numbers
QUESTIONS? COMMENTS?
HOMEWORK
LOOK AT MATH IPP
With your child, go over the IPP
and set goals with your children.
Ask- What are we striving for
this unit?
Ask- What are you going to do
as a student to reach this goal?
Ask- How can I assist you as a
parent?
Ask- How can Ms.Green assist
you as a teacher?