7th Grade Math

Reinforcement

of GLE 0606.2.1

Understand and explain

the procedures for

multiplication and division

of fractions, mixed

numbers, and decimals.

Reinforcement of

SPI 0606.2.3 Solve

problems involving the

addition, subtraction,

multiplication, and

division of decimals. Also

addresses GLE 0606.2.2.

Lesson 2 Multiply Decimals 7

Koalas

Koalas are often called koala

bears, but that is not correct.

Koalas are marsupials, not

bears.

KOALAS Koalas spend about 0.75 of each day sleeping. How many hours

does a koala sleep each day?

To multiply decimals, multiply as with whole numbers. The product has

the same number of decimal places as the sum of the decimal places of

the factors.

Multiply a Decimal by a

Whole Number

KOALAS Refer to the information above. How long does a koala

sleep each day?

There are 24 hours in each day. So, multiply 0.75 by 24.

24

× 0.75 2 decimal places

120

168

18.00 Count two decimal places from the right and place the decimal point.

A koala sleeps 18 hours each day.

a. KOALAS A koala eats about 1.125 pounds of eucalyptus leaves

each day. How many pounds of eucalyptus leaves will a koala

eat in 5 days?

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