USING THE STANDARD ALGORITHM MULTIPLYING DECIMALS
YOU CAN DO IT RELAX
FIRST LETS GET A PROBLEM 23.4 X 56 FIRST LETS GET A PROBLEM
PRETEND YOU DON'T HAVE A DECIMAL TO WORRY ABOUT CLEAR YOUR MIND, DUDE PRETEND YOU DON'T HAVE A DECIMAL TO WORRY ABOUT
SO NOW IT'S JUST 234 X 56 Write the problem vertically
THE ONES PLACE Multiply the 6 by the 4 because they are both in the ones place 4 x 6 = 24 Write the 4, carry the 2
TOP 10 NOW MULTIPLY THE 6 BY THE 3, BECAUSE IT'S IN THE TENS PLACE. ADD WHAT YOU CARRY.
HUNDREDS PLACE Now multiply the 6 by 2, because it's in the hundreds place Add what you carried
PUT IT UNDER THE 4 PLACE THE ZERO!!!
THE BOTTOM LINE Multiply the 5 by the 4 because 5 is the other number on the bottom line. And 4 is in the ones place 5 x 4 =20 Write the zero, carry the 2
TENS PLACE REVISITED Now multiply the 5 by the 3 Add what you carried
HUNDREDS PLACE Multiply the 5 by 2 Because the 2 is in the hundreds place
IT ALL ADDS UP So 234 x 56 = 13,104
THIS IS ABOUT MULTIPLYING DECIMALS BUT WAIT!!!!
LET'S LOOK AT THE PROBLEM WITH THE ANSWER AND THE DECIMALS CHILL
EASY BREEZY Here's the rule Since there is one number to the right of the decimal in the problem... There must be one number to the right of the decimal in the answer So, 23.4 x 56 = 1,310.4
“ Let's play with this a little bit.” –MOVING THE DECIMALS AROUND
LET'S TRY 2.34 X 56 This time there are two digits to the right of a decimal, so... There are two digits to the right of the decimal in the answer
OKAY, LET'S TRY .234 X 56 Now there are three digits to the right of a decimal, so... There are three digits to the right of a decimal in the answer
WHAT ABOUT TWO DECIMALS, SMARTY PANTS? BUT HOLD ON!! WHAT ABOUT TWO DECIMALS, SMARTY PANTS?
OKAY, LET'S TRY 23.4 X 5.6 Since there are two digits to the right of a decimal (on top & bottom)... There are two digits to the right of a decimal in your. Answer
AFTER ALL, YOU WON'T BE ABLE TO GET BY ON YOUR LOOKS I HOPE THIS HELPS AFTER ALL, YOU WON'T BE ABLE TO GET BY ON YOUR LOOKS