An array is the layout of items (such as objects, numbers etc.) arranged in rows and / or columns.

Use known facts from the 10 times table to solve problems involving the 9 times table

Maths

In this unit pupils will represent counting in nines as the 9x table explaining the relationship between adjacent multiples of 9 They will use known facts from the 10x table to solve problems involving the 9x table  In the future unit pupils will explain the relationship between multiples of 3 and multiples of 9 and use it to solve problems

In the prior unit pupils explained the relationship between multiples of 3 and multiples of 6 using knowledge of the relationships between the 3x and 6x tables. In this unit pupils will represent counting in 9s as the 9x table explaining the relationship between adjacent multiples of 9. They will use known facts from the 10x table to solve problems involving the 9x table.

Represent counting in nines as the 9 times table

What fact can I use to efficiently calculate 7 × 9?

What do I need to subtract from 45 × 10 to find 45 × 9?

Use 21 × 10 = 210 to calculate 21 × 9 = {{ }}

Use 34 × 10 = 340 to calculate 34 × 9 = 

Books cost £10 and Jun buys four. How much does he spend? £{{ }}

Which multiple of 9 is missing from this sequence?
18, 27, {{ }}, 45

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