What Every 5th Grader Should Know about Math I

Video Lectures

Displaying all 38 video lectures.
I. Addition
Lecture 1
Series Content Overview
Play Video		 Series Content Overview
In this video I will give a “What a Fifth Grader Should Know” series content overview of the topics.

Start of Chapter 1 can be seen at:
https://youtu.be/pfIo1wzawYI

Next video in this series can be seen at:
https://youtu.be/pfIo1wzawYI
Lecture 2
Addition of 2-Single Digit
Play Video		 Addition of 2-Single Digit
In this video I will show how to quickly add 2 single digit numbers whose sums are less and greater than 10.

Next video in this series can be seen at:
https://youtu.be/fnneMChB9Qg
Lecture 3
Addition of 2-Double Digits
Play Video		 Addition of 2-Double Digits
In this video I will show how to quickly add a double digit numbers.

Next video in this series can be seen at:
https://youtu.be/skB5Se6xIiY
Lecture 4
Addition of Double Digit Numbers: 1
Play Video		 Addition of Double Digit Numbers: 1
In this video I will show how to quickly add 2 double digit numbers: 1.

Next video in this series can be seen at:
https://youtu.be/Fv9bncE9b6U
Lecture 5
Addition of Double Digit Numbers: 2
Play Video		 Addition of Double Digit Numbers: 2
In this video I will show how to quickly add 2 double digit numbers: 2.

Next video in this series can be seen at:
https://youtu.be/7VIKSOhGMGM
Lecture 6
Addition of Double Digit Numbers: 3
Play Video		 Addition of Double Digit Numbers: 3
In this video I will show how to quickly add 2 double digit numbers: 3.

Next video in this series can be seen at:
https://youtu.be/oy5b7a8EtpI
Lecture 7
Addition of Triple Digit Numbers
Play Video		 Addition of Triple Digit Numbers
In this video I will show how to quickly add 2 triple digit numbers.

First video in this series can be seen at:
https://youtu.be/pfIo1wzawYI
II. Subtraction
Lecture 8
Subtraction of Double Digit Numbers: 1
Play Video		 Subtraction of Double Digit Numbers: 1
In this video I will show how to quickly subtract 2 double digit numbers: 1.

Next video in this series can be seen at:
https://youtu.be/TkgXt8_NpzY
Lecture 9
Subtraction of Double Digit Numbers: 2
Play Video		 Subtraction of Double Digit Numbers: 2
In this video I will show how to quickly subtract 2 double digit numbers: 2.

Next video in this series can be seen at:
https://youtu.be/TqcNvTwt85A
Lecture 10
Subtraction of Double Digit Numbers: 3
Play Video		 Subtraction of Double Digit Numbers: 3
In this video I will show how to quickly subtract 2 double digit numbers: 3.

Next video in this series can be seen at:
https://youtu.be/OTZFu7KgcnQ
Lecture 11
Subtraction of Double Digit Numbers: 4
Play Video		 Subtraction of Double Digit Numbers: 4
In this video I will show how to quickly subtract a double digit number from a triple digit number: 1.

Next video in this series can be seen at:
https://youtu.be/qv0vzyp73Ok
Lecture 12
Subtraction of Double Digit Numbers: 5
Play Video		 Subtraction of Double Digit Numbers: 5
In this video I will show how to quickly subtract a double digit number from a triple digit number: 2.

First video in this series can be seen at:
https://youtu.be/zurGpVGO2Ys
III. Multiplication
Lecture 13
Multiplication: Introduction
Play Video		 Multiplication: Introduction
In this video I will introduce some of the rules and tricks of successful multiplication.

Next video in this series can be seen at:
https://youtu.be/rwcNPnQaiu8
Lecture 14
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "0"
In this video I will explain the rules and tricks of multiplying by “0”.

Next video in this series can be seen at:
https://youtu.be/s7qeim8W_Yc
Lecture 15
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "1"
In this video I will explain the rules and tricks of multiplying by “1”.

Next video in this series can be seen at:
https://youtu.be/W2IS-ixnW-M
Lecture 16
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "2"
In this video I will explain the rules and tricks of multiplying by “2”.

Next video in this series can be seen at:
https://youtu.be/DVFmq3HLxjE
Lecture 17
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "3"
In this video I will explain the rules and tricks of multiplying by “3”.

Next video in this series can be seen at:
https://youtu.be/oyLHT9eNxAA
Lecture 18
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "4"
In this video I will explain the rules and tricks of multiplying by “4”.

Next video in this series can be seen at:
https://youtu.be/2uS4D75XT60
Lecture 19
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "5"
In this video I will explain the rules and tricks of multiplying by “5”.

Next video in this series can be seen at:
https://youtu.be/BqegJrFJF-Y
Lecture 20
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "6"
In this video I will explain the rules and tricks of multiplying by “6”.

Next video in this series can be seen at:
https://youtu.be/KJMjiixccNw
Lecture 21
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "7"
In this video I will explain the rules and tricks of multiplying by “7”.

Next video in this series can be seen at:
https://youtu.be/BrlyaDTUtu8
Lecture 22
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "8"
In this video I will explain the rules and tricks of multiplying by “8”.

Next video in this series can be seen at:
https://youtu.be/YlwpkIO3yXc
Lecture 23
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "9"
In this video I will explain the rules and tricks of multiplying by “9”.

Next video in this series can be seen at:
https://youtu.be/XIHLBvw98yc
Lecture 24
Memorizing Multiplication Table MADE EASY!
Play Video		 Memorizing Multiplication Table MADE EASY!
In this video I will explain that memorizing the multiplication table is not as difficult as it seems.

Next video in this series can be seen at:
https://youtu.be/0tsEklyAka8
Lecture 25
Multiplication: Multiply by
Play Video		 Multiplication: Multiply by "10"
In this video I will explain the rules and tricks of multiplying by “10”.

Next video in this series can be seen at:
https://youtu.be/8bOdagHmj94
Lecture 26
Multiplication: Squaring a 1-Digit Number
Play Video		 Multiplication: Squaring a 1-Digit Number
In this video I will explain the rules and tricks of multiplying by “10”.

Next video in this series can be seen at:
Lecture 27
Multiplication: Doubling Numbers
Play Video		 Multiplication: Doubling Numbers
In this video I will explain the rules, tricks and interesting patterns of squaring numbers.

Next video in this series can be seen at:
https://youtu.be/9OUoehhfjKU
Lecture 28
Multiplication of 1 and 2 Digit Numbers
Play Video		 Multiplication of 1 and 2 Digit Numbers
In this video I will explain the rules and tricks of multiplying by 1 and 2 digit numbers.

Next video in this series can be seen at:
https://youtu.be/d92fGDlH5mE
Lecture 29
Multiplication of 2 2-Digit Numbers: 1
Play Video		 Multiplication of 2 2-Digit Numbers: 1
In this video I will explain the rules and tricks of multiplying by 2 2-digit numbers “in your head.”

Next video in this series can be seen at:
https://youtu.be/cG493xTDYV4
Lecture 30
Multiplication of 2 2-Digit Numbers: 2
Play Video		 Multiplication of 2 2-Digit Numbers: 2
This video has a mistake. Please go to
https://youtu.be/8qxW7-ObeTQ
for corrected video.



In this video I will explain the rules and tricks of multiplying by 2 2-digit numbers “in your head.”

Next video in this series can be seen at:
https://youtu.be/8qxW7-ObeTQ
Lecture 31
Multiplication of 2 2-Digit Numbers: 2
Play Video		 Multiplication of 2 2-Digit Numbers: 2
In this video I will explain the rules and tricks of multiplying by 2 2-digit numbers “in your head.”

Next video in this series can be seen at:
https://youtu.be/epWjXrn4qoI

Mistake video can be found at:
https://youtu.be/cG493xTDYV4
Lecture 32
How to Square 2-Digit Number Ending in 5
Play Video		 How to Square 2-Digit Number Ending in 5
In this video I will explain the rules and tricks of squaring numbers (ending in “5”) quickly “in your head.”

Next video in this series can be seen at:
https://youtu.be/-PziXPhLUCU
Lecture 33
How to Square Any 2-Digit Number
Play Video		 How to Square Any 2-Digit Number
In this video I will explain the rules and tricks of squaring any 2-digit numbers quickly “in your head.”

Next video in this series can be seen at:
https://youtu.be/BiB973-SDRA
Lecture 34
How to Square 2-Digit Number Ending in 1
Play Video		 How to Square 2-Digit Number Ending in 1
In this video I will explain the rules and tricks of squaring numbers (ending in “1”) quickly “in your head.”

Next video in this series can be seen at:
https://youtu.be/b-MlWhVSEic
Lecture 35
How to Multiply 2-Digit Numbers by 11
Play Video		 How to Multiply 2-Digit Numbers by 11
In this video I will explain the rules and tricks of multiplying by 2-digit numbers by “11” “in your head.”

Next video in this series can be seen at:
https://youtu.be/J9VqLnfTeOg
Lecture 36
How to Multiply Any Number by 25
Play Video		 How to Multiply Any Number by 25
In this video I will explain the rules and tricks of multiplying by numbers by “25” “in your head.”

Next video in this series can be seen at:
https://youtu.be/I3S1JgWfJWQ
Lecture 37
How to Multiply Any Number by 5, 50, 500
Play Video		 How to Multiply Any Number by 5, 50, 500
In this video I will explain the rules and tricks of multiplying by numbers by “5”, “50”, “500”... "in your head.”

Next video in this series can be seen at:
https://youtu.be/pBV7h1Do4cs
Lecture 38
Great Trick for Checking Multiplication!
Play Video		 Great Trick for Checking Multiplication!
In this video I will explain the trick to quickly check if you did your multiplication correctly.

First video in this series can be seen at:
https://youtu.be/P05FnpA7n_Q