By counting by 2s
You add two zeros at the end of the answer 80*90=7200
It refers to ten. The decimal system is based on counting in tens.
Pre-historic humanoids who discovered that they had 10 digits on their hands.
simple. just multiply 192,000 by 10=1,920,000 tens
Oh, dude, it's like this - when you're dividing multiples of 10, patterns can totally make your life easier. You just look at how many zeros are in the number you're dividing by, and that tells you how many places to move the decimal point in your answer. It's like a little math hack that can save you some brain power.
By counting by 2s
10,20,30,40,50,60,70 (keep counting by tens)
You multiply by 10.
It refers to counting in units and tens, multiples of tens (such as hundreds, thousands and so on), and fractions of tens (such as tenths, hundredths and so on).
You add two zeros at the end of the answer 80*90=7200
It refers to ten. The decimal system is based on counting in tens.
Pre-historic humanoids who discovered that they had 10 digits on their hands.
simple. just multiply 192,000 by 10=1,920,000 tens
Multiply them together, then multiply that total by successive counting numbers.
dauddeg saith (decimal system, i.e. counting by tens)orsaith ar hugain (vigesimal system, i.e. counting by twenties)
Deci means ten. Our numeral system is based on the counting of tens.