Subtraction is the mathematical operation of taking away one number from another. It is the opposite of addition and is denoted by the minus sign (-).

To subtract numbers, follow these steps:

- Write down the larger number first.
- Write the smaller number below the larger number, aligning the digits by place value.
- Subtract the digits starting from the rightmost column and borrow when necessary.
- If necessary, bring down any remaining digits from the larger number.

Subtract 357 from 892.

8 | 9 | 2 | ||

- | 3 | 5 | 7 | |

= | 5 | 6 | 6 |

The result is 535.

Here are some important subtraction facts to remember:

- Subtracting a number from itself results in 0. (e.g., 7 - 7 = 0)
- Subtracting 0 from a number gives the same number. (e.g., 9 - 0 = 9)
- Subtraction is not commutative. The order of the numbers matters. (e.g., 8 - 3 is not the same as 3 - 8)

Now that you understand the concept of subtraction, try these practice problems to test your skills:

- Subtract 456 from 820.
- Subtract 297 from 500.
- Subtract 84 from 150.

Remember to always double-check your answers and ask for help if you need it!

Study GuideArea and Circumference of Circles Activity LessonArea of Circles Activity LessonCircumference of Circles Worksheet/Answer key

Area and Circumference of Circles Worksheet/Answer key

Area and Circumference of Circles Worksheet/Answer key

Area and Circumference of Circles Worksheet/Answer key

Area and Circumference of Circles

Geometry (NCTM)

Use visualization, spatial reasoning, and geometric modeling to solve problems.

Use geometric models to represent and explain numerical and algebraic relationships.

Measurement (NCTM)

Apply appropriate techniques, tools, and formulas to determine measurements.

Select and apply techniques and tools to accurately find length, area, volume, and angle measures to appropriate levels of precision.

Develop and use formulas to determine the circumference of circles and the area of triangles, parallelograms, trapezoids, and circles and develop strategies to find the area of more-complex shapes.

Connections to the Grade 6 Focal Points (NCTM)

Measurement and Geometry: Problems that involve areas and volumes, calling on students to find areas or volumes from lengths or to find lengths from volumes or areas and lengths, are especially appropriate. These problems extend the students' work in grade 5 on area and volume and provide a context for applying new work with equations.