Subtract within 20 without crossing 10

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2Subtract within 20 without crossing the 10(2).png

Subtract within 20 w/o crossing 10 (2)

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1Add and subtract within 20 without crossing the 10.png

Add & sub within 20 w/o crossing 10

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Add and subtract crossing 10 within 20 - watermark.png

Add & subtract crossing 10 within 20

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1Add by making 10 with 2 and 5 as addends.png

Add by making 10 with 2 & 5 as addends

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2Add by making 10 with 3 and 4 as addends.png

Add by making 10 with 3 & 4 as addends

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Add by making 10 with 6 as an addend

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Add by making 10 with 7 as an addend

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Add by making 10 with 8 as an addend

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Add by making 10 with 9 as an addend

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7Add 3 single-digit numbers by making 10.png

Add 3 single-digit #s by making 10

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8Add 3 single-digit numbers by making 10(2).png

Add 3 single-digit #s by making 10 (2)

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9Add 3 single-digit numbers by making 10(3).png

Add 3 single-digit #s by making 10 (3)

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2 & 5 as addends (2)

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2 & 5 as addends

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3 & 4 as addends (2)

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3 & 4 as addends

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6 as an addend (2)

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6 as an addend

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7 as an addend (2)

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8 as an addend (2)

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8 as an addend

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9 as an addend (2)

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Add crossing 10 within 20

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Equivalent number sentences

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2, 3, & 4 as subtrahends

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2, 3, & 4 as subtrahends (2)

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5 as a subtrahend

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5 as a subtrahend (2)

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7 as a subtrahend

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8 as a subtrahend

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8 as a subtrahend (2)

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9 as a subtrahend

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9 as a subtrahend (2)

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10Subtract crossing the 10 within 20.png

Subtract crossing 10 within 20

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Equivalent number sentences (2)

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Commutative Property of Addtion within 20 - WM.png

Commutative Property of Addition (2)

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