Arithmetic Grade Five

Lesson Fifty-two: Decimal * Wholes

When you multiply a decimal value and a whole number the product will be less than the whole number: 

	10 x .5 = 5		20 x .7 = 14

	30 x .2 = 6		100 x .75 = 75
Here's a step-by-step analysis of 30 x .2: 

	  30		ORIGINAL PROBLEM
	 x.2		
	-----


	  30		UNFINISHED PROBLEM - 30 x 2 = 60, but
	 x.2		we still need to place the decimal point
	-----
	  60  
	

	  30		FINISHED PROBLEM - Since there is one
	 x.2		decimal point in the problem we must
	-----		have one decimal point in the answer
	 6.0  

	ANSWER: 6	6.0 can be rewritten as just plain 6

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