Geometry - Circle Area - Intro
50 Topics, 4 Skills
Circle from Radius
Topic 1
Pi - Greek Letter to Number
Topic 2
Pi - Circle Ratio to Number
Topic 3
Pi - Definition to Name - First Time
Topic 4
Pi - Greek Letter to Circle Ratio
Topic 5
Pi - Number to Circle Ratio
Topic 6
Parts of a Circle
Topic 7
Circles - Find Diameter from Radius
Topic 8
Circles - Find Radius from Diameter
Topic 9
Circle - Radius to Equation
Topic 10
Circle - Equation to Radius
Topic 11
Circle - Radius to Equation - Squared Values
Topic 12
Circle - Equation to Radius - Squared Values
Topic 13
Circle - Diameter to Equation
Topic 14
Circle - Equation to Diameter
Topic 15
Circle - Diameter to Equation - Squared Values
Topic 16
Circle - Equation to Diameter - Squared Values
Topic 17
Circles - Find Diameter from Radius
Topic 18
Circles - Find Radius from Diameter
Topic 19
Circles - Find Radius from Diameter
Topic 20
Multiply by Pi - Approximation from Number
Topic 21
Multiply by Pi - Approximation from Number
Topic 22
Multiply by Pi - Approximation
Topic 23
Multiply by Pi - Approximation
Topic 24
Multiply by Pi - Approximation
Topic 25
Circle from Radius (with hint and calculator)
Topic 26
Circle from Radius (with hint and calculator)
Topic 27
Circle from Radius (with calculator)
Topic 28
Circle from Radius (with calculator)
Topic 29
Circle from Diameter (with hint and calculator)
Topic 30
Circle from Radius
Topic 31
Circles - Rule to Find Diameter from Radius - Simple
Topic 32
Circle from Diameter (with hint and calculator)
Topic 33
Circles - Rule to Find Radius from Diameter - Simple
Topic 34
Circle from Diameter (with calculator)
Topic 35
Circle from Diameter (with calculator)
Topic 36
Circle (with hint and calculator)
Topic 37
Circle from Diameter
Topic 38
Circle from Diameter
Topic 39
Circle (with hint and calculator)
Topic 40
Circle (with calculator)
Topic 41
Circle (with calculator)
Topic 42
Circle
Topic 43
Circle
Topic 44
Circle from Diameter - To Pi Value
Topic 45
Circle from Radius - To Pi Value
Topic 46
Circle from Diameter - To Pi Value
Topic 47
Circle from Radius - To Pi Value
Topic 48
Circle - To Pi Value
Topic 49
Circle - To Pi Value
Topic 50
This math topic focuses on practicing the approximation of numbers multiplied by π (Pi, approximately 3.14). It is structured to enhance understanding of multiplying numbers by Pi, rounding to various precisions, and is targeted as an introductory section to learning the circumference of circles in geometry. The problems present a multiplication of a whole number by 3.14 and ask students to choose an approximate result from a list of options, sharpening their skills in basic geometry calculations and approximation.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Approximate this number multiplied by Pi (π)
4 x 3.14
(3.14 is Pi)
(multiply by 3 and increase a tiny bit)