Operations on decimal numbers

The hundred square represents one whole.

Identify the value shown:

• 0.59

• 0.49

• 0.58

• 0.48

Q5 :True or false: The blocks show the decimal numbers of 6.47 + 3.26.

• False

• True

When we subtract, we move ____ on the number line.

• Left

• Right

What decimal shows the combined portion made up of element 1 and element​ 2?

• 30

• .3

• .15

• 15

Write the addition equation for the problem shown on the number line?

Subtracting Decimals: Use the grid method to subtract 0.3 from 0.7

• 0.6

• 0.5

• 0.4

• 0.8

To SUBTRACT, move to the ________ on the number line.

• right
• left
• positiive
• less

Subtracting Decimals: Use the grid method to subtract 0.5 from 0.9

• 0.3

• 0.7

• 1.2

• 0.4

To ADD, move to the _________ on the horizontal number line.

• right
• left
• down
• up

The model above is shaded to represent a number greater than 1.

Which decimal represents this number?

• 3.9

• 39.0

• .39

• 3.09