Decimal Points in Products Use understanding of place value and fractions to reason about multiplication of decimals and the placement of the decimal point in a product. Let's look at products that are decimals. Learning targets: students can use place value and fractions to reason about multiplication of decimals. In earlier grades, students have multiplied base-ten numbers up to hundredths (either by multiplying two decimals to tenths or by multiplying a whole number and a decimal to hundredths).