Adding and Subtracting Decimals Using Number Line

Using what decimal operations, should you line up the decimals?

• adding and subtracting 

• multiplying and dividing

• adding and multiplying 

• subtracting and dividing

18.74 - 4

• 14.74

• 16.70

• 0

• 2.35

47.18 + 3.20

• 50

• 50.38

• 0.47

• 43.98

156 - 4.67

• 151.61

• 160.67

• 151

• 151.33

When ​ (a)   decimals, I must always ​ (b)   the decimals.

• adding or subtracting

• line up

• multiplying or dividing

• get rid of

-5.04 + (-11) 

• -16.04

• 16.04

• 5.15

• -5.15

Which operations require finding a common denominator?

• multiplication 

• addition 

• addition and subtraction 

• division 

How do you solve problems that involve adding decimals?

• Find the magic number

• Bring UP the decimal point

• Line up the decimals

• Completely ignore the decimal

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

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

• right

• left

• down

• up