78 is a two-digit number. 

There are seven tens in tens place. 

There are eight ones in ones place.

42 is a two-digit number. 

There are four tens in tens place. 

There are two ones in ones place.

Seven is greater than four.  

So seventy-eight is greater than fourty-two.

The dolphin has more teeth than the orca.

74 is a two-digit number. 

There are seven tens in tens place. 

There are four  ones in ones place.

Eight is greater than four. 

So seventy-eight is greater than seventy four.

The dolphin has more teeth than the alligator.

Seventy-eight is greater than senventy-four.  

Seventy- four is greater than fourty two.  

The dolphin has the most teeth.

Greater than sign is an inequality sign.

Less than sign is an inequality sign.

Look at the number chart. 

42 is the least number.

208 is a three-digit number. 

There are two hundreds in hundreds place. 

There is zero ten in tens place. 

There are eight  ones in ones place.

230 is a three-digit number. 

There are two hundreds in hundreds place. 

There is three tens in tens place. 

There is zero one in ones place.

Three is greater than zero, 

so 230 is greater than 208.

96 is a two-digit number.

There is zero ones in hundreds place. 

There are nine tens in tens place. 

There are six  ones in ones place.

Two is greater than zero, 

so 208 is greater than 96.