When reading and writing mathematics in the next volume of senior one, you should refer to the numerical sequence table, starting from the highest place on the left.

Take 83 as an example:

Reading: from the highest place on the left, there are 8 tens on the ten digits, which is read as 80; There are three ones (one) in the unit, which are pronounced as three, making a total of 83.

Write numbers: starting from the highest place on the left, 80 means that the tenth place has 8 tens, so the tenth place writes 8; Three means that there are three ones (one) in the unit, so write 3 in the unit and the total is 83.

Pronunciation of 10 to 19: it can be read as ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen and nineteen, and the first ten can be omitted as ten.