DLMR Part Three - Work Smart, Not Hard!
Review...
Remember DLMR. Here's some suggestions for DLMR...
When multiplying or dividing numbers containing decimals by 10, 100, 1000, etc., there's no need for long division or multiplication. You need only MOVE the decimal place.
Does Love Mean Rules?
Do Like Mother Recommends
Doughnuts Leave Me Retching
Do Like My Rap!
Ducks Like Marshy Rivers
Dogs Like My Rug
Doug Lost My Respect
Digital Listening Mobile Radio
Don't Like My Ride
Down Long Mountain Roads
Detours Leave Me Ranting
D.L.M.R tells us that when we divide by 10, 100,
1000, etc., we move the decimal...........................................
left.
We move one place for every zero (0) in the 10, 100, 1000, 10,000, etc.
So... 27.5 ÷ 100
In the example above, we are dividing by 100. There are 2 zeroes. We need to move the decimal 2 places to the..............................................
left..
The answer is .275 or 0.275 (the same thing, really.)
So... what about 27.5 ÷ 10,000? We need to move the decimal 4 places to the left and there's only 2 spaces (the "2" and the "7"). What to do?
Captain Zero to the rescue.
Is he a bird? A plane? No - he's one big zero. You may know him. You may have seen him. He fires blanks. As many as you need. Tack them onto the left of the 27.5
00000027.5 ÷ 10,000 Put as many zeroes as you like. Captain Zero will never run out.
(Move the decimal place 4 spaces to the left. One for each zero in 10,000.) We move to the left when we divide.
The answer is... .00275 or 0.00275. Or even 000000000.00275. They are all the same.
No comments:
Post a Comment