Skip to content

Learn

Specific Tricks

Level 11 / build-up

Near-100 mul (both above)

3 visual steps / near-base product

1. Left side

103 x 1071. Left sideCross-adjust once from the base.1left side 103 + 7 = 1102right side 3 x 7 = 213answer 110|21 = 11021
Cross-adjust once from the base.

Cross-adjust once from the base.

2. Right side

103 x 1072. Right sideMultiply offsets for padded digits.1left side 103 + 7 = 1102right side 3 x 7 = 213answer 110|21 = 11021
Multiply offsets for padded digits.

Multiply offsets for padded digits.

3. Read answer

103 x 1073. Read answerBorrow if the right side is negative. Read answer answer 110|21 = 11021Borrow if the right side is negative.
Borrow if the right side is negative.

Borrow if the right side is negative.

Practice Level 11

Name the shape first; the shortcut stays small.

Start Level