Explain how making a factor 10 times the size affects the product

Maths

In this unit pupils will explain the relationship between multiplying and dividing a number by 10 and multiples of 10.  In the future unit pupils will describe represent and order tenths as decimal fractions. They will round decimal numbers with tenths to the nearest whole number.

In the prior unit pupils used knowledge of the distributive law to calculate products beyond known times tables facts. In this unit pupils will explain the relationship between multiplying and dividing a number by 10 and multiples of 10. 

Understand what happens when a number is multiplied or divided by 10 and 100

True or false? If one factor is made 10 times the size the product will be 10 times the size.

Match the equations to the related multiplications with a factor 10 times the size.

Match the expressions with the same value.

In the art cupboard, plastic pots hold 40 paintbrushes each. There are 8 pots. How many paintbrushes are there in total? {{ }} paintbrushes.

Which of the numbers in the following equation is the product? 3 × 6 = 18

Match the times table expressions with the correct product.

Which of these times table facts is being shown by the array?

Match the expressions showing commutativity.

Tick the expressions that this array is showing.

True or false? To multiply a whole number by 10, place a zero after the final digit of that number.

This lesson will soon be taken down.

Explain how making a factor 10 times the size affects the product

Lesson outcome