Basic Subtraction Basic Subtraction

on MathLineon MathLine

MathLine will enrich:MathLine will enrich:

Introductory subtractionIntroductory subtraction

Subtraction Word ProblemsSubtraction Word Problems

Practicing subtractionPracticing subtraction

Memorizing subtraction factsMemorizing subtraction facts

Playing games involving subtractionPlaying games involving subtraction

MinusMinus

Take awayTake away

SubtractSubtract

Less thanLess than

And many moreAnd many more

Keep in mind there are many words Keep in mind there are many words to describe subtraction:to describe subtraction:

No matter what the language is No matter what the language is they all can be done on MathLinethey all can be done on MathLine

Try this word problem…Try this word problem…

If you have 7 rubber balls

and you lose 3,

how many balls do you have left?

Always start any problem by clearing the rings to the right

Count and move 7 rings

Then subtract 3 rings

Count out seven ringsCount out seven rings

Subtraction – Step 1

7 77 - 3 = - 3 =

Take away three ringsTake away three rings

Subtraction – Step 2

7 – 7 – 33 = =

Count out nine ringsCount out nine rings

Subtraction – Step 1

9

99 - 6 = - 6 =

Take away six ringsTake away six rings

Subtraction – Step 2

9 – 9 – 66 = =

3 rings left.3 rings left.

Subtraction – Step 3

9 – 6 =9 – 6 = 3 3

See answer on MathLineSee answer on MathLine

Subtraction – Step 4

9 – 6 =9 – 6 = 3 3

Count out seventeen ringsCount out seventeen rings

Subtraction – Step 1

17 1717 – 8 = – 8 =

Take away eight ringsTake away eight rings

Subtraction – Step 2

17 – 17 – 88 = =

9 rings left.9 rings left.

Subtraction – Step 3

17 – 8 =17 – 8 = 9 9

See answer on MathLineSee answer on MathLine

Subtraction – Step 4

17 – 8 =17 – 8 = 9 9