Lec 5 - Addition 4

Lecture list for this course

Lec 1 - Basic Addition

Lec 2 - Addition 2

Lec 3 - Level 2 Addition

Lec 4 - Addition 3

Lec 6 - Basic Subtraction

Lec 7 - Subtraction 2

Lec 8 - Subtraction 3: Introduction to Borrowing or Regrouping

Lec 9 - Alternate mental subtraction method

Lec 10 - Why borrowing works

Lec 11 - Level 4 Subtraction

Lec 12 - Why borrowing works

Lec 13 - Adding Decimals (Old)

Lec 14 - Subtracting decimals (old)

Lec 15 - Basic Multiplication

Lec 16 - Multiplication 2: The Multiplication Tables

Lec 17 - Multiplication 3: 10,11,12 times tables

Lec 18 - Multiplication 4: 2-digit times 1-digit number

Lec 19 - Multiplication 5: 2-digit times a 2-digit number

Lec 20 - Multiplication 6: Multiple Digit Numbers

Lec 21 - Multiplication 7: Old video giving more examples

Lec 22 - Mulitplication 8: Multiplying decimals (Old video)

Lec 23 - Lattice Multiplication

Lec 24 - Why Lattice Multiplication Works

Lec 25 - Division 1

Lec 26 - Division 2

Lec 27 - Division 3: More long division and remainder examples

Lec 28 - Level 4 division

Lec 29 - Converting fractions to decimals

Lec 30 - Percent and decimals

Lec 31 - Dividing decimal

Lec 32 - Ordering Numeric Expressions

Lec 33 - Greatest Common Divisor

Lec 34 - Least Common Multiple

Lec 35 - Equivalent fractions

Lec 36 - Mixed numbers and improper fractions

Lec 37 - Time Differences 1

Lec 38 - Time Differences in Different Time Zones

Lec 39 - Prime Numbers

Lec 40 - Partial Quotient Division

Lec 41 - Partial Quotient Method of Division 2