Lesson 10

Practice.

1. Fill in each box with the right number.

   4	=		=		=	16
   5		10		15
   2	=	4	=	6	=
   7		14				28

2. Check all the fractions that are in simplest reduced form.

   	9			7			2			2
   	12			10			4			5
   	2			3			13			5
   	3			9			39			6

3. Reduce each of the following fractions to its simplest form.

   12	=			10	=			24	=			13	=
   18				18				32				52

4. Change each of the following sets of fractions to fractions with the least common denominator.

   (	2	,	5	) = (		,		)		(	11	,	3	) = (		,		)
   	3		9								9		4

   (	5	,	2	,	3	) = (		,		,		)		(	7	,	1	,	5	) = (		,		,		)
   	12		5		8										10		4		6

5. Select the symbol > or < for each.

   1	<>	1		3	<>	3		3	<>	7
   4		5		8		5		4		10
   7	<>	7		11	<>	12		5	<>	11
   8		9		12		13		6		14

6. List the fractions from the largest to the smallest in each set.

   (	1	,	1	,	1	) =>		>		>			(	2	,	1	,	1	) =>		>		>
   	4		2		3									5		4		6
   (	7	,	4	,	11	) =>		>		>			(	5	,	9	,	6	) =>		>		>
   	8		5		12									6		10		7

7. Select the symbol > or < for each.

   7	<>	0.8		0.32	<>	3
   10						5
   63	<>	0.59		0.324	<>	3
   100						8

8. Three pieces of wire have weights of 2/5 kilograms, 1/4 kilograms, and 0.3 kilograms. List the weights from the lightest to the heaviest.

   2/51/40.3 < 2/51/40.3 < 2/51/40.3