Decimals

Definition / Summary / How To / Steps

Subtracting:
 * 1) put the two numbers you are subtracting on top of each other
 * 2) line up the decimals and if there are empty places you can replace them with zeros
 * 3) subtract as you would without the decimals, borrow if needed
 * 4) then once you get your final answer, place the decimal under the place where the other to decimals were aligned on top of each other
 * 5) CHECK- add the two bottom numbers together and you should get the top number if your answer is correct.

Adding:
 * 1) put the two numbers you are adding on top of each other
 * 2) line up the decimals and if there are empty places you can replace them with zeros
 * 3) add the same way you would do without decimals
 * 4) once you get your final answer, add the decimal under the place where they were aligned while you were adding
 * 5) CHECK- subtact the two bottom numbers together and you should get the top number if your answer is correct

Multiplying:
 * 1) put the two numbers you are multiplying on top of each other
 * 2) you DO NOT align the decimals together, just place them as you would if you were multiplying without decimals
 * 3) multiply the numbers
 * 4) count the amount of places there are to the right of the decimal on both numbers
 * 5) when you find the number count that same number amount of places on the total number and you have your answer
 * 6) CHECK- divide the two bottom numbers together and you should get the top number if your answer is correct

Easy Problems
 * What is the the place value of the 7 in the decimal 0.6__**7**__3? Answer: hundreths.

Medium Problems: What is the place value of the 9 in the decimal 6.84**__9__**? Answer: tenths.

Hard Problems: 4.978 __- 4.35__ .04543

Pictures



decimals.online image. [|www.coolmath.com]10/14/09



multiplying decimals. online image. [|�1�][|http://www.helpingwithmath.com] 11/5/09



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