Multiply and Divide Decimals
How do you place the decimal when multiplying?
Count the decimal places in each factor and move the decimal in the same number of places.
1 / 8 x 4
1/2
There are 4 birds and 6 cats. Write the ratio of birds to cats in simplest form. Then explain its meaning.
2 birds/3 cats
For every 2 birds there are 3 cats
A rectangle has a height of 5 m and a length of 57 m. What is the area of the rectangle?
285 square meters
What does annex mean?
Fill in blank places with place holder zeros.
5 x 0.25
1.25
5/6 x 9/10
3/4
Anna downloaded 35 songs in 5 minutes. How many songs did she download per minute?
7 songs
A square has the area of 144 square inches. What is it's height?
12 inches
What is a rate? Define and give an example.
Example must be included.
0.26 x 0.205
0.0533
3 1/2 x 1/3
1 1/6
10 cans of corn cost $4. How much would 15 cans of corn cost?
$6.00
A triangle has 3 acute angles and the 3 sides are the same length. Name the triangle.
Acute Equalateral
Use the following vocabulary words to label 73
Exponent, Power, Base
7 is the Base
3 is the Exponent
73 is a Power
Divide. Round to the nearest tenth.
54.7 / 1.7
32.18
1/4 / 3/8
2/3
12 out of 15 people who answered a survey prefer red. If 400 people prefer red, predict how many people were surveyed.
500 people took the survey
A triangle has 2 sides the same length and one 90 degree angle. Name the triangle.
Right Isosceles
Define complementary angles and give an example.
Example must be included
Write as a product of the same factor. Then find the value.
2.1 to the third power
2.1 x 2.1 x 2.1
9.261
5 5/8 / 2 1/2
2 1/4
You have 30 markers that you want to split into two groups so that the ratio is 2:3. How many markers will be in each group?
12 markers in one group
18 markers in the other group
Angles 1 and 2 are supplementary angles. The measure of angle 1 is 143 degrees. What is the measure of angle 2?
37 degrees
What is scaling?
Multiplying or dividing a ratio by the same number on the top and bottom.
Building a bridge between two numbers.