# 4. Multiply Decimals by a Whole

Extend multiplication to multiplying a decimal number by a whole. Multiplication by a whole is just a special case of multiplication of two decimal numbers. The key concept that the students need to master is the placement of the decimal point in the product. **Multiply Decimals by a Whole Worksheet** starts off with problem involving visual models, to help students visualize the concept.

### Common Core Alignment

**5.NBT.7**Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.