Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #1
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
8
1
copyright © 2012 Creative Smarts Inc.
0
3
8
4
1/4s
6.
-
7
4
1/4s
7.
1
3
6
1
1/4s
4.
-
1
2
7
5
1/4s
3.
1/16s
1/4s
5.
0
3
6
1
1/4s
2.
1/16s
-
3
1
1/4s
8.
-
8
3
1/16s
0
2
1/16s
2
3
1/16s
0
1
1/16s
1
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #2
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
8
1
copyright © 2012 Creative Smarts Inc.
0
3
7
1
1/4s
6.
-
6
4
1/4s
7.
0
2
5
2
1/4s
4.
-
0
3
8
6
1/4s
3.
1/16s
1/4s
5.
1
2
9
3
1/4s
2.
1/16s
-
9
4
1/4s
8.
-
9
5
1/16s
2
3
1/16s
0
3
1/16s
1
2
1/16s
1
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #3
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
9
6
copyright © 2012 Creative Smarts Inc.
0
2
5
3
1/4s
6.
-
6
2
1/4s
7.
1
3
8
6
1/4s
4.
-
2
3
9
6
1/4s
3.
1/16s
1/4s
5.
0
1
9
7
1/4s
2.
1/16s
-
7
4
1/4s
8.
-
3
1
1/16s
0
3
1/16s
1
2
1/16s
1
3
1/16s
2
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #4
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
9
1
copyright © 2012 Creative Smarts Inc.
0
2
7
1
1/4s
6.
-
9
1
1/4s
7.
2
3
7
2
1/4s
4.
-
1
3
3
1
1/4s
3.
1/16s
1/4s
5.
0
1
4
1
1/4s
2.
1/16s
-
8
3
1/4s
8.
-
7
5
1/16s
2
3
1/16s
0
1
1/16s
0
2
1/16s
1
2
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #5
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
4
2
copyright © 2012 Creative Smarts Inc.
1
3
8
5
1/4s
6.
-
8
1
1/4s
7.
0
2
5
1
1/4s
4.
-
1
3
8
2
1/4s
3.
1/16s
1/4s
5.
0
3
8
5
1/4s
2.
1/16s
-
7
4
1/4s
8.
-
6
4
1/16s
1
2
1/16s
0
3
1/16s
0
1
1/16s
1
2
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #6
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
5
1
copyright © 2012 Creative Smarts Inc.
0
2
4
2
1/4s
6.
-
8
2
1/4s
7.
1
2
5
2
1/4s
4.
-
2
3
9
1
1/4s
3.
1/16s
1/4s
5.
0
3
9
3
1/4s
2.
1/16s
-
8
4
1/4s
8.
-
7
4
1/16s
0
1
1/16s
2
3
1/16s
0
3
1/16s
1
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #7
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
7
1
copyright © 2012 Creative Smarts Inc.
2
3
9
6
1/4s
6.
-
6
2
1/4s
7.
0
1
5
3
1/4s
4.
-
1
2
7
3
1/4s
3.
1/16s
1/4s
5.
0
3
9
4
1/4s
2.
1/16s
-
6
3
1/4s
8.
-
8
2
1/16s
1
3
1/16s
1
2
1/16s
0
1
1/16s
2
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #8
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
9
5
copyright © 2012 Creative Smarts Inc.
1
2
4
1
1/4s
6.
-
9
7
1/4s
7.
0
3
9
3
1/4s
4.
-
2
3
5
1
1/4s
3.
1/16s
1/4s
5.
0
3
9
2
1/4s
2.
1/16s
-
8
1
1/4s
8.
-
7
1
1/16s
0
3
1/16s
0
2
1/16s
1
3
1/16s
2
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #9
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
9
7
copyright © 2012 Creative Smarts Inc.
2
3
4
1
1/4s
6.
-
9
4
1/4s
7.
0
1
8
2
1/4s
4.
-
0
3
6
3
1/4s
3.
1/16s
1/4s
5.
0
2
7
2
1/4s
2.
1/16s
-
9
7
1/4s
8.
-
9
2
1/16s
0
1
1/16s
2
3
1/16s
1
3
1/16s
2
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #10
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
5
3
copyright © 2012 Creative Smarts Inc.
1
3
6
1
1/4s
6.
-
7
1
1/4s
7.
2
3
7
4
1/4s
4.
-
0
3
8
6
1/4s
3.
1/16s
1/4s
5.
0
2
9
6
1/4s
2.
1/16s
-
7
5
1/4s
8.
-
7
4
1/16s
0
3
1/16s
1
3
1/16s
0
1
1/16s
1
2
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #11
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
4
2
copyright © 2012 Creative Smarts Inc.
1
2
7
2
1/4s
6.
-
7
3
1/4s
7.
1
3
8
3
1/4s
4.
-
0
1
6
4
1/4s
3.
1/16s
1/4s
5.
2
3
9
4
1/4s
2.
1/16s
-
8
5
1/4s
8.
-
6
4
1/16s
2
3
1/16s
0
3
1/16s
0
1
1/16s
1
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #12
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
8
5
copyright © 2012 Creative Smarts Inc.
0
3
9
4
1/4s
6.
-
9
6
1/4s
7.
1
2
3
1
1/4s
4.
-
1
3
9
1
1/4s
3.
1/16s
1/4s
5.
2
3
8
1
1/4s
2.
1/16s
-
8
3
1/4s
8.
-
4
2
1/16s
1
3
1/16s
1
2
1/16s
0
2
1/16s
2
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #13
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
7
3
copyright © 2012 Creative Smarts Inc.
0
1
5
3
1/4s
6.
-
8
1
1/4s
7.
0
2
9
3
1/4s
4.
-
2
3
8
1
1/4s
3.
1/16s
1/4s
5.
0
3
6
3
1/4s
2.
1/16s
-
6
3
1/4s
8.
-
6
1
1/16s
1
3
1/16s
2
3
1/16s
1
3
1/16s
0
2
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #14
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
5
2
copyright © 2012 Creative Smarts Inc.
0
1
6
2
1/4s
6.
-
9
4
1/4s
7.
0
3
3
1
1/4s
4.
-
1
2
4
1
1/4s
3.
1/16s
1/4s
5.
2
3
5
1
1/4s
2.
1/16s
-
8
6
1/4s
8.
-
8
4
1/16s
1
3
1/16s
0
3
1/16s
0
2
1/16s
2
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #15
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
8
2
copyright © 2012 Creative Smarts Inc.
2
3
8
3
1/4s
6.
-
9
7
1/4s
7.
1
3
9
7
1/4s
4.
-
0
3
9
5
1/4s
3.
1/16s
1/4s
5.
1
2
7
4
1/4s
2.
1/16s
-
6
1
1/4s
8.
-
7
1
1/16s
0
2
1/16s
2
3
1/16s
1
3
1/16s
1
2
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #16
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
6
1
copyright © 2012 Creative Smarts Inc.
2
3
4
1
1/4s
6.
-
9
3
1/4s
7.
1
3
6
3
1/4s
4.
-
0
2
6
4
1/4s
3.
1/16s
1/4s
5.
0
1
9
6
1/4s
2.
1/16s
-
9
2
1/4s
8.
-
7
3
1/16s
0
2
1/16s
1
2
1/16s
1
3
1/16s
0
1
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #17
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
8
1
copyright © 2012 Creative Smarts Inc.
2
3
7
1
1/4s
6.
-
7
2
1/4s
7.
0
2
9
6
1/4s
4.
-
0
3
6
2
1/4s
3.
1/16s
1/4s
5.
1
2
7
4
1/4s
2.
1/16s
-
7
5
1/4s
8.
-
8
5
1/16s
0
2
1/16s
1
2
1/16s
2
3
1/16s
0
2
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #18
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
4
2
copyright © 2012 Creative Smarts Inc.
0
2
9
5
1/4s
6.
-
9
3
1/4s
7.
0
3
8
5
1/4s
4.
-
1
3
8
3
1/4s
3.
1/16s
1/4s
5.
0
1
9
1
1/4s
2.
1/16s
-
5
1
1/4s
8.
-
9
1
1/16s
2
3
1/16s
0
3
1/16s
1
2
1/16s
2
3
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #19
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
7
3
copyright © 2012 Creative Smarts Inc.
2
3
5
2
1/4s
6.
-
8
6
1/4s
7.
0
2
8
1
1/4s
4.
-
0
1
8
4
1/4s
3.
1/16s
1/4s
5.
0
2
9
4
1/4s
2.
1/16s
-
6
3
1/4s
8.
-
9
5
1/16s
0
1
1/16s
2
3
1/16s
1
3
1/16s
1
2
www.GregTangMath.com
Standard Algorithm
Fractions: Four ths and Sixteenths
Subtraction #20
Regroup at 4
1/4s
1.
-
-
-
-
1/16s
1/16s
6
1
copyright © 2012 Creative Smarts Inc.
0
1
9
3
1/4s
6.
-
5
3
1/4s
7.
0
2
8
6
1/4s
4.
-
0
3
6
1
1/4s
3.
1/16s
1/4s
5.
1
3
5
2
1/4s
2.
1/16s
-
8
5
1/4s
8.
-
6
2
1/16s
0
2
1/16s
1
3
1/16s
2
3
1/16s
1
3
www.GregTangMath.com