1. a) What number is in the train? Write the class names on the train cars. b) Write the name of the digit's place value: 2, 5, 1.

1. a)

The number in the train is 702, 134, 058, 360.

The class names are: миллиарды, миллионы, тысячи, единицы.

b)

The place value of the digit 2 is миллиардов.

The place value of the digit 5 is десятков.

The place value of the digit 1 is сотен.