Review Two Digit Numbers

Review Two Digit Numbers

1 block =1 one

Group of ten blocks =1 ten

 How many tens and ones are in 53?

There are 5 tens. They represent 50 blocks.

There are 3 ones. They represent 3 blocks.

53= 5 tens 3 ones

 53 = 50 + 3

Review Three Digit Numbers

Three Digit Numbers

Ten tens added together equal one hundred.

How many hundreds, tens and ones are in 146?

There is 1 hundreds, 4 tens and 6 ones in 146.

146 = 1 hundred 4 tens and 6 ones

Abacus On Three Digit Numbers

Abacus On Three Digit Numbers
 

Here is shown an abacus with 3 sticks.

Each stick has some beads in it.

Starting from the left, the numbers of beads show the numbers of hundreds, tens and ones.

The abacus on the left shows 123 which is read as one hundred and twenty three.

Four Digit Numbers

Four Digit Number

Jack has 10 coins of one hundred each.

2 3 4 9 = 2 thousands 3 hundreds 4 tens 9 ones

Abacus On Four Digit Numbers

Abacus On Four Digit Numbers
 

Here is shown an abacus with 4 sticks. Each stick has some beads in it. Starting from the left, the numbers of beads show the numbers of thousands, hundreds, tens and ones.

In the 1st example, the abacus from the left shows 1234 which is read as one thousand and two hundred and thirty four; and in the 2nd example, the abacus from the left shows 5468 which is read as five thousand and four hundred and sixty eight.

Five Digit Number

Five Digit Number

Sara has 10 coins of one thousand each.

Face Value And Place Value

Face Value And Place Value
 

Face Value

The face value of a digit is the value of the digit itself at whatever place it may be.

For example: In number 6521,

Place Value

The place value of each digit in a number depends upon its place in the number.

We use place value to read and write numbers in words.

Successor And Predecessor

Successor and Predecessor
Successor

The number which comes just after a given number is called its successor.

 It is obtained by adding 1 to the given number.

For example: 5000 is the successor of 4999.

Predecessor

The number which comes just before a given number is called its predecessor.

It is obtained by subtracting 1 from the given number.

 For example: 8999 is the predecessor of 9000.