# NCERT Class 6 Solutions: Knowing Your Numbers (Chapter 1) Exercise 1.3 – Part 2

Q-3 Estimate the following products using general rule (round the numbers to simplest possible- one significant figure) before multiplication:

Solution:

• Here we will round off the numbers hundredths and keep only one non-zero digit in each number. This will make the multiplication simple. 578 and 161 will be rounded off to (nearest hundredths) 600 and 200 respectively

• Here we will round off the numbers thousands and keep only one non-zero digit in each number. This will make the multiplication simple. So 5281 and 3491 may be rounded off to 5000 and 3000 respectively

• Here we will round off the numbers to thousands and hundredths respectively and keep only one non-zero digit in each number. This will make the multiplication simple. 1291 and 592 may be rounded off to 1000 and 600 respectively

• Here we will round off the numbers to thousands and tens respectively and keep only one non-zero digit in each number. This will make the multiplication simple. 9250 and 29 may be rounded off to 9000 and 30 respectively

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