Page 21 - Math Genius C2

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Expanded Form and Standard Form of a Number

The expanded form of a number is the sum of the place values of its digits.

The standard form of a number is the numeral that is written using the face values
of the digits.

Look at the following numbers.

(a) H T O Place (b) H T O Place

5 0 7 value 2 6 9 value

7 9

0 60
500 200

Expanded form: 500 + 0 + 7 Expanded form: 200 + 60 + 9
Or 5 hundreds + 0 tens + 7 ones Or 2 hundreds + 6 tens + 9 ones

Standard form: 507 Standard form: 269

Practice time 1D

1. Write the place value of the coloured digit in the following numbers.

(a) 4 6 2 (b) 8 2 5 (c) 9 3 4

2. Write the place value and face value of each digit in the following numbers.

(a) H T O Place Face (b) H T O Place Face

2 1 5 value value 7 0 9 value value

3. Form numbers using the given place values of digits. One has been done for you.

(a) 9 4 7 (b) (c)

7 7 3

40 20 0

900 700 500

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