## Decimals

## Standards

**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.

## Links/Practice |
## Videos |

## Questions to Consider

Should my answer me larger or smaller than my divisor?

Between what two numbers should my product or quotient fall between?

Is my answer reasonable?

Can I use another strategy to check my work?

Between what two numbers should my product or quotient fall between?

Is my answer reasonable?

Can I use another strategy to check my work?

## Strategies to Multiply Decimals

**An area model can be used to multiply decimals by decimals. By decomposing each number by its place value, you can easily find partial products. Add the partial products to get your final product.**

**Below is another version of the area model. The partial products are the same as those shown in the model above.**

**We can use grids and number lines to help us multiply decimals by whole numbers. Remember, multiplication is repeated addition.**

## Strategies to Divide Decimals

**We can also use grids and number lines to divide decimals by decimals.**