Number Sense

Number Sense

Understanding numbers, their relationships and numerical reasoning

Algebra

Algebra

Using symbols to solve equations and express patterns

Geometry

Geometry

Studying shapes, sizes and spatial relationships in mathematics

Measurement

Measurement

Quantifying and comparing attributes like length, weight and volume

Operations

Operations

Performing mathematical operations like addition, subtraction, division

Probability and Statistics

Probability and Statistics

Analyzing uncertainty and likelihood of events and outcomes

Community Resources

Get started with our Resources

Calculator Suite

Explore functions, solve equations, construct geometric shapes

Graphing Calculator

Visualize equations and functions with interactive graphs and plots

Geometry

Explore geometric concepts and constructions in a dynamic environment

3D Calculator

Graph functions and perform calculations in 3D

Scientific Calculator

Perform calculations with fractions, statistics and exponential functions

Notes

Explore our online note taking app with interactive graphs, slides, images and much more

Get started with the GeoGebra Apps

Number Sense

Number Sense

Understanding numbers, their relationships and numerical reasoning

Algebra

Algebra

Using symbols to solve equations and express patterns

Geometry

Geometry

Studying shapes, sizes and spatial relationships in mathematics

Measurement

Measurement

Quantifying and comparing attributes like length, weight and volume

Operations

Operations

Performing mathematical operations like addition, subtraction, division

Probability and Statistics

Probability and Statistics

Analyzing uncertainty and likelihood of events and outcomes

Community Resources

Get started with our Resources

Calculator Suite

Explore functions, solve equations, construct geometric shapes

Graphing Calculator

Visualize equations and functions with interactive graphs and plots

Geometry

Explore geometric concepts and constructions in a dynamic environment

3D Calculator

Graph functions and perform calculations in 3D

Scientific Calculator

Perform calculations with fractions, statistics and exponential functions

Notes

Explore our online note taking app with interactive graphs, slides, images and much more

Get started with the GeoGebra Apps

Estimating Division to the Nearest Dollar

Estimating Division to the Nearest Dollar

Estimate division problems involving money by adjusting values to friendly numbers. Compare estimates to determine reasonable results.

GeoGebra Content Team

Author:

GeoGebra Content Team

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Putting It All Together

Answer these open ended questions on your own or with others to form deeper math connections.

Open-ended question

Why is it useful to round $ values in calculations?

Text and math input

GeoGebra Content Team

Author:

GeoGebra Content Team

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Prerequisite Resources

Practice

GR. 4-5

Multiplying 2-Digit Numbers Using Partial Products

Exploration

GR. 4-5

Dividing Whole Numbers Using an Area Model

Exploration

GR. 4-5

Long Division With One-Digit Divisors and Remainders

More from Estimating Quotients of Whole Numbers

Exploration

GR. 4-5

Estimating Products of 2-digit Numbers

Exploration

GR. 4-5

Exploring Division Estimation with Whole Numbers

Exploration

GR. 4-5

Exploring Division Estimates Using Compatible Numbers

Next Resources

Exploration

GR. 6-8

Exploring the Mean as a Balance Point

Exploration

GR. 4-5

Decimal Multiplication Word Problems

Exploration

GR. 4-5

Relating Units Within a Measurement System