Scale Drawing & Scale Factor

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or space that maintains the proportions of the original while being drawn at a different size.

Front

What is a scale factor?

Back

A scale factor is a ratio that compares the dimensions of a scale drawing to the dimensions of the actual object.

Front

How do you express a scale factor in simplest form?

Back

To express a scale factor in simplest form, reduce the ratio by dividing both the numerator and denominator by their greatest common divisor.

Front

If a toy alligator is 7 inches and a real alligator is 175 inches, what is the scale factor?

Back

The scale factor is 1/25.

Front

What is the scale of 1cm : 4m expressed as a fraction?

Back

The scale can be expressed as 1cm/4m.

Front

How do you convert a scale drawing measurement to the actual measurement?

Back

Multiply the measurement in the scale drawing by the scale factor to find the actual measurement.

Front

If a toy eraser pencil is 2 cm and a real pencil is 11 cm, what is the scale factor?

Back

The scale factor is 1/5.5.

Front

What is the relationship between the scale factor and the dimensions of the objects?

Back

The scale factor determines how much larger or smaller the scale drawing is compared to the actual object.

Front

If a blueprint measures 2 cm and the real house measures 4 ft, what is the scale factor?

Back

The scale factor is 1/2.

Front

How do you find the length of a real object from a scale drawing?

Back

To find the length of a real object, multiply the length in the scale drawing by the scale factor.