A placeholder is where we use the digit 0 to hold a place in a number and maintain place value.

A digit is one of the symbols of a number system. In our number system we use the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9

Use knowledge of the composition of 100 to multiply and divide by 100 in different ways

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

What is the equation being represented on this Gattegno chart?

What is the missing number in the following equation?
11 × 10 × 10  = 11 × {{ }}

What is the missing number in the following equation? 3,400 ÷ 100  = 3,400 ÷ {{ }} ÷ 10

What is the number being shown on the Gattegno chart?

What is the number being shown on the place value chart?

What is the missing number in the following equation? 10 × 8 = 70 + {{ }}

What is the missing number in the following equation?
3 × 100 = 150 × {{ }}

This lesson will soon be taken down.

Use knowledge of the composition of 100 to multiply and divide by 100 in different ways

Lesson outcome