Simplifying, Comparing, Ordering Fractions
simplify: 2/6
1/3
subtraction and simplify is possible
7/9-1/9
6/9 = 2/3
subtraction and simplify if possible
3/4 - 1/5
11/20
Which rules would you use to find the factors of 18?
2's, 3's, 6's, 9's
must have first 4 .... (trick ? 1's ????)
9/4 Change
2 1/4
simplify: 9/27
1/3
Addition and Simplify if possible
4/8+1/8
5/8
Addition and simplify is possible
3/5 + 1/2
11/10 = 1 1/10
What rule would you use to find the Greatest common factor of 6 and 27
divisible by 3
11/8
1 3/8
Compare the fractions ( > < = )
4/5 5/7
Cross multiply:
28 > 25
4/5 > 5/7
subtraction and simplify if possible
4 5/9 - 2 3/9
2 2/9
subtraction and simplify if possible
3 5/6 - 3/4
3 1/12
261 is divisible by which 2 numbers?
3, 9
29/3
9 2/3
compare the fractions:
7/8 3/4
7/8 > 3/4
Cross multiply or change to 8ths ....3/4 = 6/8
Addition and simplify if possible
3 2/7 + 4/7
3 6/7
subtraction and simplify is possible
11 2/4 - 5 5/7
5 13/14
Is 27156 divisible by 4? Why or why not?
Yes, 56 is divisible by 4
four goes into 5 once with 1 remainder and into 16... 4 times
9/2
4 1/2
Ordering Fractions: Greatest-Least
5/6, 1/2, 4/5
5/6 , 4/5, 1/2 2 I 6 5 2
25/30, 24/30, 15/30 x 3 x 5 x 1 = 30
Addition and simplify if possible
5 5/7 + 1 6/7
6 11/7 = 7 4/7
Addition Simplify if possible
3 5/6 + 2 1/3
5 21/18 = 6 3/18 = 6 1/6
273819600 is divisible by which of these numbers? Why?
2,3,4,5,6,9,10 state the rules
2, 3, 4, 5, 6, 9, 10
Rules: Must know all
even
digits add to 9
last 2 digits are 00
Last digit 0/5
digits add to 9
last digit 0
28/5
5 3/5