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Specific Tricks

Level 13 / realistic untimed

Near-100 square (below)

3 visual steps / near-base square

1. Left side

98^21. Left sideCross-adjust once from the base.1left side 98 - 2 = 962right side 2^2 = 043answer 9604
Cross-adjust once from the base.

Cross-adjust once from the base.

2. Right side

98^22. Right sideMultiply offsets for padded digits.1left side 98 - 2 = 962right side 2^2 = 043answer 9604
Multiply offsets for padded digits.

Multiply offsets for padded digits.

3. Read answer

98^23. Read answerBorrow if the right side is negative. Read answer answer 9604Borrow if the right side is negative.
Borrow if the right side is negative.

Borrow if the right side is negative.

Practice Level 13

Name the shape first; the shortcut stays small.

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