To multiply by 2. To have 2 of something.

Double the numbers 6 to 9 and halve the result explaining what doubling and halving is

Maths

In this unit pupils will explain 11-19 as cardinal and ordinal numbers. They will double and halve numbers 6-9 and use addition and subtraction facts to add and subtract within 20. In the future unit pupils will explore the counting sequence for counting to 100 and beyond and represent the numbers from 20-99 in different ways, including marking the position on a number line. 

In prior learning, pupils will have looked for patterns and relationships in number, spotting connections and talking about what they notice. In this unit pupils will explain 11 to 19 as cardinal and ordinal numbers. They will double and halve the numbers 6 to 9 and use known facts to add and subtract within 20.

Composition of numbers 11 to 19

Finish the sentence. I know that double 7 is 14 so half of 14 is {{ }}

The two parts are the same size. What are they?

Laura partitions the number 19 into one part of 10 and another part. What is the missing part?

Complete the sentence. 6 can be partitioned into one part of 5 and one part of {{ }}

This lesson will soon be taken down.

Double the numbers 6 to 9 and halve the result explaining what doubling and halving is

Lesson outcome