How many ten thousands are there in the smallest 6 digit number?

Of the numbers 1386787215, 137698890, 86720560, which one is the largest? Which one is the smallest?

In a year, a whole-sale paper firm sold 6,25,600 notebooks out of 7,50,000 notebooks. Find the number of notebooks left unsold.

Name the property being illustrated in each of the cases given below. 50 \(\times\) 42 = 50 \(\times\) 40 + 50 \(\times\)2

Find the 5 or 6 or 7 digit numbers from a newspaper or a magazine to get a rounded number to the nearest ten thousand.