Times tables: groups of 10 and of 5, and factors of 0 and 1
Spine 2: Multiplication and Division – Topic 2.4
Primary
KS1
Year 2
Mastery PD Materials
Introduction
Build up the ten and five times tables, combining children’s experience of counting in units of five or ten and of representing equal groups; explore patterns in the ten and five times tables, and generalise about the product when one factor is zero or one.
Teaching points
- Teaching point 1: Counting in multiples of ten can be represented by the ten times table. Adjacent multiples of ten have a difference of ten. Facts from the ten times table can be used to solve problems about groups of ten.
- Teaching point 2: Counting in multiples of five can be represented by the five times table. Adjacent multiples of five have a difference of five. Facts from the five times table can be used to solve problems about groups of five.
- Teaching point 3: Skip counting and grouping can be used to explore the relationship between the five times table and the ten times table.
- Teaching point 4: When zero is a factor, the product is zero. When one is a factor, the product is equal to the other factor (if there are only two factors).