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Discover addition & subtraction math resources and lessons for your interactive whiteboard.

Addition & Subtraction

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Lesson

Subtracting decimal numbers to 100 using the Standard Algorithm

Lesson

Adding decimal numbers to 100 using the Standard Algorithm

Lesson

Addition & Subtraction to 1,000 using standard algorithm

Lesson

Subtraction with numbers up to 20

Lesson

Estimate the difference to 100,000

Lesson

Estimate the sum up to 10,000

Lesson

Subtracting to 10,000 using the standard algorithm

Lesson

Adding to 10,000 using the standard algorithm

Lesson

Partial differences subtraction to 1,000 with regrouping

Lesson

Partial differences subtraction to 1,000 without regrouping

Lesson

Subtracting to 100,000

Lesson

Subtraction to 100,000 with simple numbers

Lesson

Subtracting from a ten-thousands number

Lesson

Subtraction to 10,000 without regrouping

Lesson

Subtraction to 10,000 with simple numbers

Lesson

Subtracting from a thousands number

Lesson

Automaticity subtraction to 20

Lesson

Automaticity addition to 20

Lesson

Subtraction through 1,000

Lesson

Addition to 100,000

Lesson

Addition to 100,000 with simple numbers

Lesson

Addition to 10,000 without regrouping

Lesson

Addition to 10,000 with simple numbers

Lesson

Addition through 1,000

Tool

Math Problem Generator

Lesson

Automaticity subtraction to 100

Lesson

Automaticity subtraction to 20 crossing tens

Lesson

Automaticity subtraction to 20 without crossing tens

Lesson

Automaticity subtraction to 10

Lesson

Automaticity addition to 100

Lesson

Automaticity addition to 20 crossing tens

Lesson

Automaticity addition to 20 without crossing tens

Lesson

Automaticity addition to 10

Lesson

Mental math + - to 100

Lesson

Fill in the blank problems + - to 1,000

Lesson

Fill in the blank problems + - to 100

Lesson

Fill in the blank problems + - to 20

Lesson

Fill in the blank problems + - to 10

Lesson

Word Problems with addition & subtraction to 100

Lesson

Word Problems with addition & subtraction to 20

Tool

Digital Dice

Lesson

Subtraction to 1,000 crossing tens and hundreds

Lesson

Subtraction to 1,000 crossing hundreds

Lesson

Subtraction to 1,000 crossing tens

Lesson

Subtraction to 1,000 crossing multiples of ten

Lesson

Subtraction to 1,000 from a multiple of 100

Lesson

Subtraction to 1,000 without crossing tens or hundreds

Lesson

Addition to 1,000 without crossing tens or hundreds

Lesson

Addition to 1,000 crossing hundreds

Lesson

Subtraction to 1,000 with multiples of ten

Lesson

Addition to 1,000 crossing tens

Lesson

Addition to 1,000 with multiples of ten

Lesson

Addition to 1,000 with crossing tens and hundreds

Lesson

Adding to a hundreds number

Lesson

Adding using standard algorithm with decimal numbers to the thousandths place

Lesson

Subtraction to 1,000 using standard algorithm with regrouping

Lesson

Subtraction to 1,000 using standard algorithm

Lesson

Addition to 1,000 using standard algorithm with regrouping

Lesson

Addition to 1,000 using standard algorithm

Lesson

Subtraction with decimal numbers to the hundredths place

Lesson

Partial differences subtraction with decimal numbers to the thousandths place

Lesson

Partial sums addition with decimal numbers to the hundredths place

Lesson

Partial sums addition with decimal numbers to the thousandths place

Tool

Rekenrek/Abacus

Lesson

Partial Sums Addition to 1,000

Lesson

Multiple routes to numbers up to 20

Lesson

Double and half math problems to 20

Lesson

On the bus: Recognizing how many added/subtracted to 20

Lesson

On the bus: Recognizing addition and subtraction situations

Lesson

Addition and subtraction to 20 using related problems

Lesson

Addition and subtraction to 20 using fact families

Lesson

Recognizing addition and subtraction situations to 20

Lesson

Addition and subtraction to 10 using fact families

Lesson

Recognizing addition and subtraction situations to 10

Lesson

Addition and Subtraction to 10 with 1 or 2

Lesson

Estimated and exact difference with decimal numbers with 3 decimal places

Lesson

Estimated and exact difference with decimal numbers with 1 and 2 decimal places

Lesson

Estimated and exact difference with decimal numbers with 1 or 2 decimal places

Lesson

Determine difference between decimal numbers with 1, 2, and 3 decimals

Lesson

Subtraction with decimal numbers with 1,2, and 3 decimal places

Lesson

Determine the difference between decimal numbers with 3 decimal places

Lesson

Subtraction with decimal numbers with 3 decimal places

Lesson

Determine difference between decimal numbers with 1 and 2 decimals

Lesson

Determine difference between decimal numbers with 1 or 2 decimals places

Lesson

Subtraction with decimal numbers with 1 and 2 decimal places

Lesson

Subtraction with decimal numbers with 1 or 2 decimal places

Lesson

Estimate the difference to 1,000

Lesson

Estimate the difference to 100

Lesson

Subtraction to 1,000 with three or more numbers

Lesson

Subtraction to 1,000 via compensation method

Lesson

Subtraction to 1,000 via one more/one less

Lesson

Subtraction to 1,000 via simplification

Lesson

Subtraction to 1,000 splitting the subtrahend with regrouping

Lesson

Subtraction to 1,000 from hundreds numbers

Lesson

Determine difference to 1,000

Lesson

Subtraction to 1,000 splitting the subtrahend

Lesson

Subtracting numbers to a hundreds number

Lesson

Subtraction through 100 regrouping tens

Lesson

Subtraction through 100 regrouping hundreds as tens

Lesson

Subtraction through 100 using tens

Lesson

Subtraction to 1,000 with the zero-rule

Lesson

Subtraction to 100 with three or more numbers

Lesson

Subtraction to 100 via compensation method

Lesson

Subtraction to 100 via one more/one less

Lesson

Subtraction to 100 via simplification

Lesson

Subtraction to 100 with subtrahends >10

Lesson

Subtraction to 100 regrouping with subtrahends <10

Lesson

Subtraction to 100 by splitting the subtrahend with subtrahends >10

Lesson

Subtraction to 100 by splitting the subtrahend with subtrahends < 10

Lesson

Determining difference to 100

Lesson

Subtraction to 100 by creating an addition problem

Lesson

Subtracting numbers to 100 from a tens number

Lesson

Subtraction from tens numbers with small differences

Lesson

Subtraction to 100

Lesson

Subtraction to 100 by tens and ones

Lesson

Subtracting numbers to 100 to a tens number

Lesson

Subtracting numbers to 100 using tens

Lesson

Subtraction to 100 via the zero rule

Lesson

Subtraction to 50 with subtrahends >10

Lesson

Subtraction to 50 with subtrahends <10

Lesson

Number Bond Charts

Lesson

Subtraction to 50 with subtrahends >10

Lesson

Subtraction to 50 without crossing ten with subtrahends <10

Lesson

Subtraction to 30 using simplification

Lesson

Subtraction to 30 with regrouping

Lesson

Subtraction to 30 without regrouping

Lesson

Subtraction to 20 with three or more numbers

Lesson

Subtraction to 20 with one more or one less

Lesson

Subtraction to 20 via inverse operation

Lesson

Subtraction to 20 crossing ten

Lesson

Subtraction to 20 with one more or one less, decomposing the second number

Lesson

Subtraction to 20 using grouping with three numbers

Lesson

Subtraction to 20 on the number line, crossing ten

Lesson

On the bus: Subtraction to 20 crossing ten

Lesson

Subtraction from 20 with numbers to 20

Lesson

Subtracting tens and ones from numbers to 20

Lesson

Subtraction to 20 with result of 0 or 1

Lesson

Determining difference to 20

Lesson

Subtraction to 20 using simplification

Lesson

Subtraction to 20 without regrouping

Lesson

Subtraction to 20 on the number line

Lesson

On the bus: Subtraction to 20

Lesson

Recognizing subtraction problems to 20

Lesson

Subtraction to 10 with three numbers

Lesson

Subtraction to 10 via inverse operation

Lesson

Subtraction to 10 using related problems

Lesson

Subtraction to 10 with one more or one less

Lesson

Subtraction to 10

Lesson

Subtraction to 10 on the number line

Lesson

Subtraction from 10 with numbers to 10

Lesson

Subtraction to 10 with result of 0 or 1

Lesson

Subtraction to 10 with 1 or 2

Lesson

Subtraction to 10 with rekenrek

Lesson

Recognizing subtraction problems to 10

Lesson

Subtraction to 10 via bus example

Lesson

Subtraction to 5

Lesson

Recognizing subtraction problems to 5

Lesson

Addition to 100 with round numbers

Lesson

Estimated and exact sum with decimal numbers with 3 decimal places

Lesson

Estimated and exact sum with decimal numbers with 1 and 2 decimal places

Lesson

Estimated and exact sum with decimal numbers with 1 or 2 decimal places

Lesson

Addition with decimal numbers with 1, 2, or 3 decimal places

Lesson

Addition with decimal numbers with 3 decimal places

Lesson

Addition with decimal numbers with 1 and 2 decimal places

Lesson

Addition with decimal numbers with 1 or 2 decimal places

Lesson

Estimate the sum to 1,000

Lesson

Estimate the sum to 100

Lesson

Addition to 1,000 via compensation method

Lesson

Addition to 1,000 with one more or one less

Lesson

Addition to 1,000 via simplification

Lesson

Addition to 1,000 with three or more random numbers

Lesson

Addition to 1,000 by splitting the second addend

Lesson

Addition to 1,000 using grouping with three or more addends

Lesson

Addition to 1,000 by splitting the second addend into hundreds, tens, and ones

Lesson

Addition to 1,000 with three or more simple numbers

Lesson

Addition to 1,000 by counting, with hundreds and tens

Lesson

Addition to 1,000 by counting, with hundreds

Lesson

Addition through 100 crossing tens

Lesson

Addition through 100 without regrouping

Lesson

Addition through 100 with tens

Lesson

Addition to 100 in tens with the zero rule

Lesson

Addition to 100 via compensation method

Lesson

Addition to 100 with one more or one less

Lesson

Addition to 100 using simplification

Lesson

Addition to 100 crossing tens with addends >10

Lesson

Addition to 100 crossing ten with addends <10

Lesson

Addition to 100 by tens and ones using addends >10

Lesson

Addition to 100 by making tens using addends <10

Lesson

Addition to 100 with three or more random addends

Lesson

Addition to 100 with three or more simple numbers

Lesson

Addition to 100 making ten

Lesson

Adding to 100 by tens and ones without regrouping

Lesson

Addition to 100 without regrouping

Lesson

Addition to 100 with tens

Lesson

Addition to 100 with the zero-rule

Lesson

Addition to 50 with 10, 5, and 1

Lesson

Addition to 50 making tens with second addends >10

Lesson

Addition to 50 making ten with second addends <10

Lesson

Addition to 50 with second addends >10

Lesson

Addition to 50 with second addends <10

Lesson

Add doubles to 40

Lesson

Addition to 30 using simplification

Lesson

Addition to 30 making ten

Lesson

Addition to 30 without regrouping numbers

Lesson

Addition to 30 with repeating addends

Lesson

Addition to 20 with three or more addends

Lesson

Adding to 20 with 2 or 3 addends

Lesson

Adding equal amounts to 20

Lesson

Addition to 20 with one more or one less

Lesson

Addition to 20 with one more using an addition table

Lesson

Adding to 20 swapping addends

Lesson

Addition to 20 with doubles and near doubles

Lesson

Add doubles to 20

Lesson

Addition to 20

Lesson

Addition to 20 using grouping with three addends

Lesson

Addition to 20 making tens on the number line

Lesson

On the bus: Addition to 20 making ten

Lesson

Addition to 20 with one more or one less

Lesson

Addition to 20 with tens and ones

Lesson

Addition to 20

Lesson

Addition to 20 using simplification

Lesson

Addition to 20

Lesson

Addition to 20 on the number line

Lesson

On the bus: Addition to 20

Lesson

Recognizing addition problems to 20

Lesson

Addition to 10 with three addends

Lesson

Adding to 10 with 2 or 3 addends

Lesson

Addition to 10 swapping addends

Lesson

Addition to 10 with one more

Lesson

Addition to 10 with one more, one less

Lesson

Adding doubles to 10

Lesson

Addition to 10

Lesson

Addition to 10 on the number line

Lesson

Adding to the number 10

Lesson

Addition to 10 with 1 or 2 more

Lesson

Addition to 10 with the rekenrek

Lesson

Recognizing addition problems to 10

Lesson

On the bus: Addition to 10

Lesson

Addition to 5

Lesson

Recognizing addition problems to 5

Lesson

Decomposing and composing to the thousands place

Lesson

Math automaticity- decomposing 10

Lesson

Decomposing and composing to the hundreds place

Lesson

Decomposing and composing 100 from round numbers

Lesson

Decomposing and composing 1,000

Lesson

Math automaticity- decomposing numbers to 10

Lesson

Decomposing and composing 100 from random numbers

Lesson

Number bond charts to 20

Lesson

Decomposing and composing to the tens place

Lesson

Number bond charts to 30

Lesson

Decomposing and composing numbers to 20

Lesson

Decomposing and Composing 20

Lesson

Composing to 20

Lesson

Decomposing and composing number to 10

Lesson

Combining numbers to 10

Lesson

Decomposing and composing 2 to 9

Lesson

Decomposing and composing numbers to 5

Lesson

Composing numbers to 10

Lesson

Decomposing numbers to 10

Lesson

Coloring decompositions to 10- recognizable objects

Lesson

Coloring decompositions to 10- abstract objects

Lesson

Addition with decimal numbers up to the hundredths place

Lesson

Decomposition and addition up to 10

Lesson

Number bond charts to 10

Lesson

Decomposing and composing 10