# Surf for More Math

## Lesson 7 **- Choosing a Multiplication Method**

To encourage your child to have fun on the Web
while learning about Choosing a Multiplication Method, here are some
games and interactive activities they can do on their own or in pairs.

**Goal**

Justify the choice of a multiplication method.

**Builds Upon**

Student Book page 280

### Instructions for Use

Interactive
Calculator allows your child to practice a method to multiplying
decimals.

To use the interactive calculator, start by pressing any decimal tenth
- try 0.44. This number will appear in the window of the calculator.
Press the 'X' button on the calculator, and press 12. Press the ' ='
button on the calculator to show the answer.

Base
Ten Blocks allows your child to visualize the area represented by
the multiplication of the two decimals.

To use Base Ten Blocks, click the place value backdrop to decimals.
Click on a block and drag it into the workspace. Select a block by clicking
on it. Once selected, the block can be moved to any location on the
workspace. To remove a block, drag it to the recycling bin. Click on
the tools on the top panel to select and drag, rotate, lasso blocks
to group them, break larger blocks into the next size down, or glue
smaller blocks to form the next size up.