Times the length/height/depth is a phrase that is used to compare and describe lengths or heights. For example, one tree might be three times the height of another tree; it is three times as tall.

A unit fraction is a fraction where the numerator is one.

Compare and describe lengths using knowledge of division

Maths

Compare and describe lengths using knowledge of multiplication

Solve comparison and change problems using multiplication

Solve comparison and change problems using division

Solve problems involving comparison and change

Compare and describe measurements involving mass and capacity

Compare and describe measurements involving time and money

Describe changes in measurement using knowledge of multiplication and division

Use knowledge of multiplication and division to solve comparison and change problems

Solve comparison and change problems in a range of contexts

In this unit pupils will learn to compare and describe measurements using multiplication and division. In the future unit pupils will apply memorised unit conversions to convert between units of measure with larger to smaller units and smaller to larger units and solve problems involving converting between units of time and money. 

 In the prior unit pupils used their knowledge of decimal place value to convert between and compare metres and centimetres and explained that different lengths can be composed additively and multiplicatively. In this unit pupils will learn to compare and describe measurements using multiplication and division.

In this unit pupils will learn to compare and describe measurements using multiplication and division, applying their understanding of scaling as a structure of multiplication.

Compare and describe measurements using knowledge of multiplication and division

Which image represents this statement? The green ribbon is one-half times the length of the white ribbon.

If the white ribbon is 14 cm long, how long is the green ribbon if it is one-half times the length?

Which equations show that one half of 14 cm is equal to 7 cm?

Lucas has spent half of his money. He has £13 left. How much money did he have to start with?

The red ribbon is one half the length of the white ribbon.

The red ribbon is the same length as the white ribbon.

The red ribbon is one third the length of the white ribbon.

The white ribbon is the whole. Which sentence describes the length of the shorter red ribbon?

The red ribbon is one third times the length of the white ribbon. If the white ribbon is 60 cm long, how long is the red ribbon?

A piece of elastic stretches to 3 times its original length. Which bar model represents this?

The original piece of elastic was 50 cm long. How long is it now it has stretched to three times it's original length?

Hamish the cat is 4 times as tall as a mouse. If the mouse is 8 cm tall, how tall is the cat? The cat is {{ }} cm tall.

Compare and describe lengths using knowledge of division

Lesson outcome