Subtraction to 20

Addition & Subtraction

Subtraction to 20

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Subtraction with numbers up to 20

Lesson

Subtraction with numbers up to 20

Subtraction to 20 with three or more numbers

Lesson

Subtraction to 20 with three or more numbers

Subtraction to 20 with one more or one less

Lesson

Subtraction to 20 with one more or one less

Subtraction to 20 via inverse operation

Lesson

Subtraction to 20 via inverse operation

Subtraction to 20 crossing ten

Lesson

Subtraction to 20 crossing ten

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

Lesson

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

Subtraction to 20 using grouping with three numbers

Lesson

Subtraction to 20 using grouping with three numbers

Subtraction to 20 on the number line, crossing ten

Lesson

Subtraction to 20 on the number line, crossing ten

On the bus: Subtraction to 20 crossing ten

Lesson

On the bus: Subtraction to 20 crossing ten

Subtraction from 20 with numbers to 20

Lesson

Subtraction from 20 with numbers to 20

Subtracting tens and ones from numbers to 20

Lesson

Subtracting tens and ones from numbers to 20

Subtraction to 20 with result of 0 or 1

Lesson

Subtraction to 20 with result of 0 or 1

Determining difference to 20

Lesson

Determining difference to 20

Subtraction to 20 using simplification

Lesson

Subtraction to 20 using simplification

Subtraction to 20 without regrouping

Lesson

Subtraction to 20 without regrouping

Subtraction to 20 on the number line

Lesson

Subtraction to 20 on the number line

On the bus: Subtraction to 20

Lesson

On the bus: Subtraction to 20

Recognizing subtraction problems to 20

Lesson

Recognizing subtraction problems to 20

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