Step-by-step Maths Level 3 · Length and mass · Summary
Step-by-step Maths Level 3 Length and mass: summary and key words
Part of the Step-by-step Maths Level 3 length and mass chapter. Chapter overview · whole chapter on one page
Chapter summary
| Skill | Method |
|---|---|
| Choose a unit | m and cm for length; kg and g for mass; small things use the smaller unit |
| Measure with a ruler | Put the 0 at the start; read the end of the line |
| Read a scale | Find the label before the pointer; count the small marks |
| Change units | 100 cm = 1 m; 1000 g = 1 kg |
| Compare and order | Change to the same unit, then compare or order the numbers |
| Add and subtract | Change to the smaller unit, work it out, change back |
Can you…?
- I can choose metres, centimetres, kilograms or grams for an object
- I can measure a line to the nearest centimetre
- I can read a scale to the nearest mark
- I know that 100 cm is 1 m and 1000 g is 1 kg
- I can compare and order lengths and masses
- I can add and subtract lengths and masses in the same unit
Key terms
- length
- how long something is; measured in cm or m
- mass
- how heavy something is; measured in g or kg
- ruler
- a tool with centimetre marks, used to measure length
- scale
- a tool used to read the mass of an object