Common Denominators
Adding fractions
Reducing Fractions
Division and Multiplication
Other
100
Rename one half so it has a denominator of 6.
1/2 =?/6
3/6
100
Add:
1/2 +1/4
3/4
100
Reduce:
2/4
1/2
100
Multiple: 238x18
4,284
100
Estimate the perimeter of this shape:
around 12 units
200
Rename one fifth so it has a denominator of 15.
1/5 =?/15
3/15
200
Add:
1/5+2/3
13/15
200
Reduce:
6/18
1/3
200
Multiply: 671x28
18,788
200
Estimate the area of this shape:
around 14 units^2
300
Rename two thirds so it has a denominator of 12.
2/3 = ?/12
8/12
300
Add:
3/7 +1/2
13/14
300
Simplify:
9/4
2 1/4
300
Multiply: 841x63
52,983
300
Estimate the perimeter and the area of this shape:
Perimeter: around 17 units
Area: around 22 units^2
400
Rename these fractions so they have a common denominator.
1/2 and 1/5
5/10 and 1/10
400
Add:
1 1/2 + 3 1/3
4 5/6
400
Solve and then simplify the answer:
2/10 + 3/10
1/2
400
Divide: 529/22
24r1
400
Round this number to the nearest hundred thousands:
1,453,629
1,500,000
500
Rename these fractions so they have a common denominator.
2/3 and 4/7
14/21 and 8/14
500
Add:
4 4/5 -1 1/3
3 7/15
500
Solve and then simplify the answer:
4/9+8/9
1 1/3
500
Divide: 983/46
21r17
500
Round this number to the nearest millions
36,932,546
37,000,000