Understand that dividing a number by 10 makes it one-tenth times the size

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

The Base 10 blocks represent a number. What is one tenth times the size of the number shown?

Match the numbers to the numbers that are one tenth times the size.

What is the missing number in the following equation?
9 = {{ }} ÷ 10

What is the missing number in the following equation? 16 = {{ }} ÷ 10

True or false: To find one tenth times the size, divide by ten.

What is the missing factor in the equation? {{ }} × 10 = 60

What is the missing product in the equation? 32 × 10 = {{ }}

Match the numbers with those that are ten times their size.

What is ten times the size of the number being represented by Base 10 blocks?

What is ten times the size of the number being represented in the place value chart?

What is ten times the size of the number being represented using place value counters?

This lesson will soon be taken down.

Understand that dividing a number by 10 makes it one-tenth times the size

Lesson outcome