Ecosystems
Place Value
Yeast
Decimals
Multiplication
100

What is another name for a plant?

Producer

100

What is the value of the 6 in the number 4,698?

600

100

Yeast is a type of _____________, which is also a type of decomposer.

Fungus

100

What is 1.23 in word form?

one and twenty three hundredths

100

What is 10 x 10?

100

200
This type of organism eats dead matter and recycles nature.

A decomposer

200

Round the following number to the nearest TEN:

237

240

200
If yeast is in a state of dormancy, that means it is _______________.

Asleep/Sleeping/Hibernating

200

What is 12.3 + 5.9 ?

18.2

200

What is 10 x 30?

300

300

Name 3 types of ecosystems.

Answers could be: Arctic Tundra, Grassland, Rainforest, Woods/Forest, Ocean, or Desert.

300

Round the following number to the nearest THOUSAND:

234,378

234,000

300

Yeast requires 2 things to "wake up". List these 2 things!

Water and Sugar

300

What is 2.3 x 4?

9.2

300

What is 531 x 20?

10,620

400

A smaller system within a system is called a ___________?

Subsystem.

400

Round this number to the nearest TENTH:

12.345

12.3

or 12.300

400

What is the process called when you test a yeasts' viability using warm water and sugar?

Proofing

400

What is 18.9 divided by 3?

6.3

400

What is 10,000 x 600?

6,000,000

500

The earth's sphere has 4 main systems. List ALL 4 of the systems.

Hydrosphere, Biosphere, Lithosphere, and Atmosphere.

500

Round this number to the nearest THOUSANDTHS place:

3.4897

3.49

or 3.4900

500

What is the name of the gas that is expelled when yeast is activated?

Carbon Dioxide, or CO2

500

What is 12.347 divided by 2?

6.1735

500

What is 234 x 13?

3,042