Aussie Maths & Science Teachers: Save your time with SmarterEd
David drew a scale drawing of his road bike on a grid.
What scale is David using for his picture?
One unit on the grid represents
cm |
`40\ text(cm)`
`text(Strategy 1:)`
`1.5\ text(units)` | `= 60\ text(cm)` |
`:. 1\ text(unit)` | `= 60 ÷ 1.5` |
`= 40\ text(cm)` |
`text(Strategy 2:)`
`4\ text(units)` | `=160\ text(cm)` |
`:. 1\ text(unit)` | `=160 -: 4` |
`=40\ text(cm)` |