Box Method Subtracting Across Zeroes

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Presentation transcript:

Box Method Subtracting Across Zeroes by Kay McCullough

Benchmark Goal Add and subtract whole numbers N.FL.04.08 Add and subtract whole numbers fluently.

What do you do when You need to borrow, but the neighbors are zeroes? 4,000 -1232

Subtraction across Zeroes Box Method Subtraction across Zeroes 500 – 324 4 9 1 5 0 0 -3 2 4 6 1 7

Subtraction across Zeroes Box Method Subtraction across Zeroes 300 – 136 2 9 1 3 0 0 - 1 3 6 1 6 4

Subtraction across Zeroes Box Method Subtraction across Zeroes 700 – 382 6 9 1 7 0 0 - 3 8 2 1 8 3

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Subtracting across Zeroes Box Method Subtracting across Zeroes 6003 – 2915 5 9 9 1 6 0 0 3 - 2 9 1 5 3, 0 8 8

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Subtraction across Zeroes Box Method Subtraction across Zeroes 308 – 136 2 1 3 0 8 -1 3 6 1 7 2

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Subtraction across Zeroes Box Method Subtraction across Zeroes 805 – 622 7 1 8 0 5 - 6 2 2 1 8 3