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# Copyright © Mathematics Mastery 2017
Parental Guidance
Pupils extend their understanding of the number system and place value to include
4-digit numbers. This week explores recognising the place value, ordering of and comparing 4-digit numbers.
In Year 3 pupils consolidated and deepened their understanding of 3-digit numbers through reasoning and problem solving.
In Year 5 pupils will further extend the number system to include 5-digit and 6-digit numbers.
Understanding place value
This number is 3203.
This number is three thousand, two hundred and three.
There are two hundreds in this number.
There is a place holder in the tens place.
There are 3 ones.
Unit 1: Reasoning with 4-digit numbers (Week 1 of 2)
Children are expected to write numbers in digits and words with the correct spelling.
The position of the digit in a number determines its value. Where the value is zero (as in the tens place in this number), it does not mean there are none of that value (i.e. ‘no’ tens). The tens have been regrouped into hundreds, in this example creating 2 hundreds.
Thousands
Hundreds
Tens
Ones
1000
1000
1000
100
100
1
1
1