2D 4

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Step 2 – Double the middle values Example 7 83 Cubing any 2-digit Number Step 3 – Add all the values in each column Step 1 – Calculate the square and cube values of the digits as shown 1 2 4 4 7 6 1 3 5 2 5 5 4 7 Final Answer + 7 8 3 = 4 7 4 5 5 2 Step 4 – Add column totals as shown © LazyMaths.com 73 83 72 x 8 7 x 82 343 512 392 448 Double Add 784 896 343 1176 1344 512 1 1 0 4 3 3 0 4

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