Dividing with Area
The area of a square is 7 square cm. One side is 3 1/2 cm long. How long is the other side?
2 cm
True or False?
When multiplying decimals, you need to line up the decimals.
False! Only when adding and subtracting!
5 ÷ 1.5
3.3
(3 9/10)x(8/3)
Hint: You need to change the mixed number to an improper fraction BEFORE multiplying.
10 2/5 or 52/5
1 5/6 ÷ 4 1/6
Hint: You need to change the mixed numbers to improper fractions BEFORE dividing.
11/25
A rectangle has an area of 9 square meters. One side is 2 1/5 meters long. How long is the other side?
4 1/11 meters
9.4 x 4.7
44.18
6.4 ÷ 3.2
2
5/8 x 4/15
1/6
4/11 ÷ 2/7
1 3/11 or 14/11
The area of a rectangle is 6 square inches. One side is 8/9 inches long. How long is the other side?
6 3/4 inches
4.4 x 6.02
26.488
15.4 ÷ 2.5
6.16
2 3/8 x 8/5
Hint: You need to change the mixed number to an improper fraction BEFORE multiplying.
3 4/5 or 19/5
9/10 ÷ 6/5
3/4
A triangle has an area of 8 square units. It's height is 2 2/3 units. How long is the base of the triangle?
6 units
27.2 x 4.6
125.12
32.436 ÷ 4.24
7.65
You can only do this when multiplying fractions. It does not work with adding, subtracting, or dividing. What is it?
Cross reducing! (Simplifying BEFORE multiplying)
When dividing fractions, it is helpful to remember these three words. What are they?
Keep Change Flip!
A triangle has an area of 54/5 square inches. It's base length is 3 3/5 inches. What is the height of the triangle?
6 inches
42.7 x 32.6
1,392.02
Order these quotients from least to greatest:
a) 24.5 x 0.1
b) 2.5 x 1.2
c) 2.4 x 1.3
a) 2.45
b)3
c) 3.12
3/5 x (2 2/7) x (3 3/4)
Hint: You need to change the mixed numbers to improper fractions BEFORE multiplying.
5 1/7 or 36/7
4 1/6 ÷ 1 1/3
Hint: You need to change the mixed numbers to improper fractions BEFORE dividing.
3 1/8 or 25/8