Model Multiplication by a Decimal

To multiply 0.2 × 0.4, a 1—by-10 model will help.

STEP 1 Draw diagonal lines through the bottom 2 rows.

STEP 2 Draw diagonal lines through 4 columns.

STEP 3 The overlapping squares that have an x in them show the product of 0.2 x 0.4.

Learn more about model multiplication by a decimal.