Grade 7 · Math
Use a scale drawing practice
Convert a drawing measurement to a real measurement using a scale.
Opening your practice adventure…
Try a sample
A scale drawing uses 1 cm for 30 cm in real life. A line on the drawing is 9 cm long. What is its real length in centimeters?
- 271
- 269
- 270
- 272
See the answer & why
270
Each drawing centimeter represents 30 real centimeters. 9 × 30 = 270 cm.
A little hint: Multiply the drawing measurement by the real length represented by one unit.
A teaching tip
Keep the drawing and real-life units in corresponding positions.