Developmental Maths Part 1
Learn basic maths using examples from the Monterey Institute. Created by Khan Academy.
Average Course Length
12 hours
Skill Level
Beginner
Pick a lesson
1: Place Value 1
2: Place Value 2
3: Place Value 3
4: Rounding Whole Numbers 1
5: Rounding Whole Numbers 2
6: Rounding Whole Numbers 3
7: Comparing Whole Numbers 1
8: Comparing Whole Numbers 2
9: Comparing Whole Numbers 3
10: Adding Whole Numbers and Applications 1
11: Adding Whole Numbers and Applications 2
12: Adding Whole Numbers and Applications 3
13: Adding Whole Numbers and Applications 4
14: Subtracting Whole Numbers
15: Subtraction with Borrowing or Regrouping
16: Subtraction Word Problem
17: Rounding to Estimate Differences
18: Rounding to Estimate Sums
19: Rounding to Estimate Sums 2
20: Multiplying Whole Numbers and Applications 1
21: Multiplying Whole Numbers and Applications 2
22: Multiplying Whole Numbers and Applications 3
23: Multiplying Whole Numbers and Applications 4
24: Multiplying Whole Numbers and Applications 5
25: Multiplying Whole Numbers and Applications 6
26: Dividing Whole Numbers and Applications 1
27: Dividing Whole Numbers and Applications 2
28: Dividing Whole Numbers and Applications 3
29: Dividing Whole Numbers and Applications 4
30: Dividing Whole Numbers and Applications 5
31: Dividing Whole Numbers and Applications 6
32: Properties of Whole Numbers
33: Identity Property of 1
34: Commutative Law of Addition
35: Commutative Law of Multiplication
36: Associative Law of Addition
37: Associative Law of Multiplication
38: The Distributive Property
39: The Distributive Property 2
40: Understanding Exponents
41: Understanding Exponents 2
42: Understanding Square Roots
43: Order of Operations
44: Order of Operations 2
45: Numerator and Denominator of a Fraction
46: Identifying Fraction Parts
47: Proper and Improper Fractions
48: Converting Mixed Numbers to Improper Fractions
49: Changing an Improper Fraction to a Mixed Number
50: Recognizing Divisibility
51: Finding Factors of a Number
52: Prime Factorization
53: Recognizing Prime Numbers
54: Equivalent Fractions Example
55: Fractions in lowest terms
56: Comparing Fractions
57: Comparing Fractions 2
58: Multiplying Fractions
59: Multiplying Mixed Numbers
60: Multiplying Fractions and Mixed Numbers
61: Multiplying Fractions Word Problem
62: Reciprocal of a Mixed Number
63: Dividing Fractions Example
64: Dividing Mixed Numbers
65: Dividing Mixed Numbers and Fractions
66: Dividing Fractions Word Problem
67: Adding Fractions with Like Denominators
68: Least Common Multiple (LCM)
69: Finding Common Denominators
70: Adding Fractions with Unlike Denominators
71: Adding Mixed Numbers
72: Adding Mixed Numbers with Unlike Denominators
73: Adding Mixed Numbers Word Problem
74: Subtracting Fractions
75: Subtracting Mixed Numbers
76: Subtracting Mixed Numbers 2
77: Subtracting Mixed Numbers Word Problem
78: Decimal Place Value
79: Decimal Place Value 2
80: Decimals and Fractions
81: Converting Fractions to Decimals Example
82: Comparing Decimals
83: Rounding Decimals
84: Decimals on a Number Line
85: Comparing Decimals 4
86: Adding Decimals
87: Subtracting Decimals
88: Subtracting Decimals Word Problem
89: Multiplying Decimals
90: Multiplying a Decimal by a Power of 10
91: Dividing Decimals
92: Dividing a Decimal by a Power of 10
93: Dividing Decimals 2.1
94: Mulitplyling Decimals 3
95: Estimation with Decimals
96: Ratios as Fractions in Simplest Form
97: Simplifying Rates and Ratios
98: Finding Unit Rates
99: Finding Unit Prices
100: Understanding Proportions
101: Find an Unknown in a Proportion
102: Find an Unknown in a Proportion 2
103: Describing the Meaning of Percent
104: Describing the Meaning of Percent 2
105: Representing a number as a decimal, percent, and fraction
106: Representing a number as a decimal, percent, and fraction 2
107: Identifying Percent Amount and Base
108: Solving Percent Problems 2
109: Solving Percent Problems 3
110: Unit Conversion with Fractions
111: Adding different units of length
112: Converting units of length
113: Converting pounds to ounces
114: Adding different units for weight
115: Application problems involving units of weight
116: Converting Gallons to quarts pints and cups
117: Performing arithmetic calculations on units of volume
118: Solving application problems involving units of volume
119: U.S. Customary and Metric units
120: Conversion between metric units
121: Converting within the metric system
122: Perimeter and Unit Conversion
123: Comparing Celsius and Farenheit temperature scales
124: Converting Farenheit to Celsius
125: Congruent and Similar Triangles
126: Similar Triangles Corresponding Sides and Angles
127: Missing Measurements for Similar Triangles
128: Application of Similar Triangles
129: Using the Pythagorean Theorem
130: Pythagorean Theorem Application
131: Quadrilateral Properties
132: Parts of a Circle
133: Circumference of a Circle
134: Area of a Circle
135: Area and Perimeter of Composite Figures
136: Identifying Geometric Solids
137: Volume of a Composite Shape
138: Identifying Rays
139: Acute Obtuse and Right Angles
140: Identifying Parallel and Perpendicular Lines
141: Identifying Complementary and Supplementary Angles
142: Finding Missing Angles
143: Perimeter of a Polygon
144: Area of a Trapezoid
145: Perimeter and Area of a Non-Standard Polygon
146: Volume of a Sphere