# Mental Math to Add and Subtract Decimals

## Group decimal and whole number parts to make mental addition and subtraction easier.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

## Adding Decimals

by CK-12 //basic
Reviews adding decimals with examples.
MEMORY METER
This indicates how strong in your memory this concept is
4
• Video

## Subtracting Decimals (old)

by CK-12 //basic
Reviews subtracting decimals with examples.
MEMORY METER
This indicates how strong in your memory this concept is
3
• Video

## Adding and Subtracting Decimals

by CK-12 //basic
Learn how to add and subtract decimals.
MEMORY METER
This indicates how strong in your memory this concept is
1
Please wait...
Please wait...